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180983878084 = 2234726132
BaseRepresentation
bin1010100010001101111…
…0101101000111000100
3122022011002002121020201
42220203132231013010
510431123333044314
6215050504340244
716034643403222
oct2504336550704
9568132077221
10180983878084
116a833754369
122b0ab174684
13140b3728529
148a8c74bb12
154a93ca2b74
hex2a237ad1c4

180983878084 has 27 divisors (see below), whose sum is σ = 318156173517. Its totient is φ = 90083959344.

The previous prime is 180983878069. The next prime is 180983878087. The reversal of 180983878084 is 480878389081.

The square root of 180983878084 is 425422.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 590004100 + 180393873984 = 24290^2 + 424728^2 .

It is a super-2 number, since 2×1809838780842 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180983878087) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 295242562 + ... + 295243174.

Almost surely, 2180983878084 is an apocalyptic number.

180983878084 is the 425422-nd square number.

It is an amenable number.

180983878084 is a deficient number, since it is larger than the sum of its proper divisors (137172295433).

180983878084 is an frugal number, since it uses more digits than its factorization.

180983878084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 64.

Multiplying 180983878084 by its sum of digits (64), we get a square (11582968197376 = 34033762).

The spelling of 180983878084 in words is "one hundred eighty billion, nine hundred eighty-three million, eight hundred seventy-eight thousand, eighty-four".

Divisors: 1 2 4 347 613 694 1226 1388 2452 120409 212711 240818 375769 425422 481636 751538 850844 1503076 73810717 130391843 147621434 260783686 295242868 521567372 45245969521 90491939042 180983878084