180918004 has 6 divisors (see below), whose sum is σ = 316606514. Its totient is φ = 90459000.

The previous prime is 180917987. The next prime is 180918041. The reversal of 180918004 is 400819081.

180918004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 138015504 + 42902500 = 11748^2 + 6550^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22614747 + ... + 22614754.

Almost surely, 2^180918004 is an apocalyptic number.

It is an amenable number.

180918004 is a deficient number, since it is larger than the sum of its proper divisors (135688510).

180918004 is a wasteful number, since it uses less digits than its factorization.

180918004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45229505 (or 45229503 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 180918004 is about 13450.5763445289. The cubic root of 180918004 is about 565.5798510975.

The spelling of 180918004 in words is "one hundred eighty million, nine hundred eighteen thousand, four".