385881237 has 24 divisors (see below), whose sum is σ = 645989760. Its totient is φ = 217395360.

The previous prime is 385881173. The next prime is 385881239. The reversal of 385881237 is 732188583.

385881237 is a `hidden beast` number, since 38 + 588 + 1 + 2 + 37 = 666.

It is not a de Polignac number, because 385881237 - 2⁶ = 385881173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385881192 and 385881201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385881239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38662 + ... + 47607.

It is an arithmetic number, because the mean of its divisors is an integer number (26916240).

Almost surely, 2^385881237 is an apocalyptic number.

It is an amenable number.

385881237 is a deficient number, since it is larger than the sum of its proper divisors (260108523).

385881237 is a wasteful number, since it uses less digits than its factorization.

385881237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86353 (or 86350 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 385881237 is about 19643.8600330994. The cubic root of 385881237 is about 728.0332604908.

The spelling of 385881237 in words is "three hundred eighty-five million, eight hundred eighty-one thousand, two hundred thirty-seven".