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2180384001 = 3426918321
BaseRepresentation
bin1000000111110110…
…0000010100000001
312121221202222120000
42001331200110001
513431134242001
61000205110213
7105013646445
oct20175402401
95557688500
102180384001
11a19851854
1250a258369
13289953c63
14169812825
15cb644a86
hex81f60501

2180384001 has 10 divisors (see below), whose sum is σ = 3257116962. Its totient is φ = 1453589280.

The previous prime is 2180383981. The next prime is 2180384009. The reversal of 2180384001 is 1004830812.

It can be written as a sum of positive squares in only one way, i.e., 2123366400 + 57017601 = 46080^2 + 7551^2 .

It is not a de Polignac number, because 2180384001 - 27 = 2180383873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2180384009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13459080 + ... + 13459241.

Almost surely, 22180384001 is an apocalyptic number.

It is an amenable number.

2180384001 is a deficient number, since it is larger than the sum of its proper divisors (1076732961).

2180384001 is an equidigital number, since it uses as much as digits as its factorization.

2180384001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26918333 (or 26918324 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2180384001 is about 46694.5821375457. The cubic root of 2180384001 is about 1296.7143855911.

The spelling of 2180384001 in words is "two billion, one hundred eighty million, three hundred eighty-four thousand, one".

Divisors: 1 3 9 27 81 26918321 80754963 242264889 726794667 2180384001