185478939964 has 12 divisors (see below), whose sum is σ = 335780839800. Its totient is φ = 89541557168.

The previous prime is 185478939931. The next prime is 185478939991. The reversal of 185478939964 is 469939874581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799478074 + ... + 799478305.

It is an arithmetic number, because the mean of its divisors is an integer number (27981736650).

Almost surely, 2^185478939964 is an apocalyptic number.

It is an amenable number.

185478939964 is a deficient number, since it is larger than the sum of its proper divisors (150301899836).

185478939964 is a wasteful number, since it uses less digits than its factorization.

185478939964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598956412 (or 1598956410 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 73.

The spelling of 185478939964 in words is "one hundred eighty-five billion, four hundred seventy-eight million, nine hundred thirty-nine thousand, nine hundred sixty-four".