185468921 has 12 divisors (see below), whose sum is σ = 205232832. Its totient is φ = 167475000.

The previous prime is 185468917. The next prime is 185468923. The reversal of 185468921 is 129864581.

It is not a de Polignac number, because 185468921 - 2² = 185468917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (185468923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13196 + ... + 23346.

It is an arithmetic number, because the mean of its divisors is an integer number (17102736).

Almost surely, 2^185468921 is an apocalyptic number.

185468921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

185468921 is the 7280-th centered heptagonal number.

It is an amenable number.

185468921 is a deficient number, since it is larger than the sum of its proper divisors (19763911).

185468921 is a wasteful number, since it uses less digits than its factorization.

185468921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324 (or 10313 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 185468921 is about 13618.6974780997. The cubic root of 185468921 is about 570.2829425267.

The spelling of 185468921 in words is "one hundred eighty-five million, four hundred sixty-eight thousand, nine hundred twenty-one".