185713972 has 6 divisors (see below), whose sum is σ = 324999458. Its totient is φ = 92856984.

The previous prime is 185713949. The next prime is 185713973. The reversal of 185713972 is 279317581.

It can be written as a sum of positive squares in only one way, i.e., 163942416 + 21771556 = 12804^2 + 4666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185713973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23214243 + ... + 23214250.

Almost surely, 2^185713972 is an apocalyptic number.

It is an amenable number.

185713972 is a deficient number, since it is larger than the sum of its proper divisors (139285486).

185713972 is a wasteful number, since it uses less digits than its factorization.

185713972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46428497 (or 46428495 counting only the distinct ones).

The product of its digits is 105840, while the sum is 43.

The square root of 185713972 is about 13627.6913672126. The cubic root of 185713972 is about 570.5339942971.

The spelling of 185713972 in words is "one hundred eighty-five million, seven hundred thirteen thousand, nine hundred seventy-two".