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1980472401 = 321549142061
BaseRepresentation
bin111011000001011…
…1001110001010001
312010000121102101200
41312002321301101
513024000104101
6524304221413
7100035511005
oct16602716121
95100542350
101980472401
11926a1a256
1247330a869
132573cac7b
1414b054705
15b8d06986
hex760b9c51

1980472401 has 12 divisors (see below), whose sum is σ = 2862549300. Its totient is φ = 1319453280.

The previous prime is 1980472387. The next prime is 1980472423. The reversal of 1980472401 is 1042740891.

It can be written as a sum of positive squares in 2 ways, for example, as 1105496001 + 874976400 = 33249^2 + 29580^2 .

It is not a de Polignac number, because 1980472401 - 210 = 1980471377 is a prime.

It is a super-2 number, since 2×19804724012 = 7844541862245409602, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1980472451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57090 + ... + 84971.

It is an arithmetic number, because the mean of its divisors is an integer number (238545775).

Almost surely, 21980472401 is an apocalyptic number.

It is an amenable number.

1980472401 is a deficient number, since it is larger than the sum of its proper divisors (882076899).

1980472401 is a wasteful number, since it uses less digits than its factorization.

1980472401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143616 (or 143613 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1980472401 is about 44502.4988174821. The cubic root of 1980472401 is about 1255.8070925772.

The spelling of 1980472401 in words is "one billion, nine hundred eighty million, four hundred seventy-two thousand, four hundred one".

Divisors: 1 3 9 1549 4647 13941 142061 426183 1278549 220052489 660157467 1980472401