185713971 has 16 divisors (see below), whose sum is σ = 252263040. Its totient is φ = 121504320.

The previous prime is 185713949. The next prime is 185713973. The reversal of 185713971 is 179317581.

It is a happy number.

It is not a de Polignac number, because 185713971 - 2⁶ = 185713907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (185713973) 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 15 ways as a sum of consecutive naturals, for example, 44200 + ... + 48218.

It is an arithmetic number, because the mean of its divisors is an integer number (15766440).

Almost surely, 2^185713971 is an apocalyptic number.

185713971 is a deficient number, since it is larger than the sum of its proper divisors (66549069).

185713971 is a wasteful number, since it uses less digits than its factorization.

185713971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306.

The product of its digits is 52920, while the sum is 42.

The square root of 185713971 is about 13627.6913305226. The cubic root of 185713971 is about 570.5339932731.

The spelling of 185713971 in words is "one hundred eighty-five million, seven hundred thirteen thousand, nine hundred seventy-one".