180399916 has 12 divisors (see below), whose sum is σ = 321656832. Its totient is φ = 88497968.

The previous prime is 180399911. The next prime is 180399931. The reversal of 180399916 is 619993081.

It is not an unprimeable number, because it can be changed into a prime (180399911) by changing a digit.

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, 425260 + ... + 425683.

It is an arithmetic number, because the mean of its divisors is an integer number (26804736).

Almost surely, 2^180399916 is an apocalyptic number.

It is an amenable number.

180399916 is a deficient number, since it is larger than the sum of its proper divisors (141256916).

180399916 is a wasteful number, since it uses less digits than its factorization.

180399916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851000 (or 850998 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 180399916 is about 13431.3035852817. The cubic root of 180399916 is about 565.0394584393.

The spelling of 180399916 in words is "one hundred eighty million, three hundred ninety-nine thousand, nine hundred sixteen".