180487945 has 16 divisors (see below), whose sum is σ = 242040960. Its totient is φ = 128060800.

The previous prime is 180487939. The next prime is 180487981. The reversal of 180487945 is 549784081.

It is not a de Polignac number, because 180487945 - 2⁵ = 180487913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 180487895 and 180487904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37765 + ... + 42274.

It is an arithmetic number, because the mean of its divisors is an integer number (15127560).

Almost surely, 2^180487945 is an apocalyptic number.

It is an amenable number.

180487945 is a deficient number, since it is larger than the sum of its proper divisors (61553015).

180487945 is a wasteful number, since it uses less digits than its factorization.

180487945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80096.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 180487945 is about 13434.5801944088. The cubic root of 180487945 is about 565.1313501492.

The spelling of 180487945 in words is "one hundred eighty million, four hundred eighty-seven thousand, nine hundred forty-five".