180979402 has 8 divisors (see below), whose sum is σ = 271533636. Its totient is φ = 90468192.

The previous prime is 180979391. The next prime is 180979411. The reversal of 180979402 is 204979081.

It can be written as a sum of positive squares in 2 ways, for example, as 164891281 + 16088121 = 12841^2 + 4011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3588 + ... + 19360.

Almost surely, 2^180979402 is an apocalyptic number.

180979402 is a deficient number, since it is larger than the sum of its proper divisors (90554234).

180979402 is a wasteful number, since it uses less digits than its factorization.

180979402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21512.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 180979402 is about 13452.8585066520. The cubic root of 180979402 is about 565.6438239902.

The spelling of 180979402 in words is "one hundred eighty million, nine hundred seventy-nine thousand, four hundred two".