180474986 has 4 divisors (see below), whose sum is σ = 270712482. Its totient is φ = 90237492.

The previous prime is 180474979. The next prime is 180474991. The reversal of 180474986 is 689474081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172528225 + 7946761 = 13135^2 + 2819^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180474986.

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 as a sum of consecutive naturals, namely, 45118745 + ... + 45118748.

Almost surely, 2^180474986 is an apocalyptic number.

180474986 is a deficient number, since it is larger than the sum of its proper divisors (90237496).

180474986 is an equidigital number, since it uses as much as digits as its factorization.

180474986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90237495.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 180474986 is about 13434.0978856044. The cubic root of 180474986 is about 565.1178243845.

The spelling of 180474986 in words is "one hundred eighty million, four hundred seventy-four thousand, nine hundred eighty-six".