185385988 has 12 divisors (see below), whose sum is σ = 324530752. Its totient is φ = 92662920.

The previous prime is 185385979. The next prime is 185386027. The reversal of 185385988 is 889583581.

It is a happy number.

It is a super-2 number, since 2×185385988² = 68735929093472288, which contains 22 as substring.

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, 11953 + ... + 22663.

Almost surely, 2^185385988 is an apocalyptic number.

It is an amenable number.

185385988 is a deficient number, since it is larger than the sum of its proper divisors (139144764).

185385988 is a wasteful number, since it uses less digits than its factorization.

185385988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15042 (or 15040 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 55.

The square root of 185385988 is about 13615.6523163600. The cubic root of 185385988 is about 570.1979285952.

The spelling of 185385988 in words is "one hundred eighty-five million, three hundred eighty-five thousand, nine hundred eighty-eight".