92157381 has 12 divisors (see below), whose sum is σ = 136363500. Its totient is φ = 59939520.

The previous prime is 92157379. The next prime is 92157383. The reversal of 92157381 is 18375129.

92157381 is a `hidden beast` number, since 9 + 2 + 1 + 573 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (92157379) and next prime (92157383).

It can be written as a sum of positive squares in 2 ways, for example, as 6890625 + 85266756 = 2625^2 + 9234^2 .

It is not a de Polignac number, because 92157381 - 2¹ = 92157379 is a prime.

It is a super-2 number, since 2×92157381² = 16985965745558322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92157383) 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, 124506 + ... + 125243.

It is an arithmetic number, because the mean of its divisors is an integer number (11363625).

Almost surely, 2^92157381 is an apocalyptic number.

It is an amenable number.

92157381 is a deficient number, since it is larger than the sum of its proper divisors (44206119).

92157381 is a wasteful number, since it uses less digits than its factorization.

92157381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249796 (or 249793 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 92157381 is about 9599.8635927809. The cubic root of 92157381 is about 451.6930150492.

The spelling of 92157381 in words is "ninety-two million, one hundred fifty-seven thousand, three hundred eighty-one".