386231965 has 24 divisors (see below), whose sum is σ = 545236920. Its totient is φ = 261854208.

The previous prime is 386231957. The next prime is 386231969. The reversal of 386231965 is 569132683.

It can be written as a sum of positive squares in 4 ways, for example, as 64352484 + 321879481 = 8022^2 + 17941^2 .

It is not a de Polignac number, because 386231965 - 2³ = 386231957 is a prime.

It is a super-2 number, since 2×386231965² = 298350261575522450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386231969) 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, 12949 + ... + 30661.

It is an arithmetic number, because the mean of its divisors is an integer number (22718205).

Almost surely, 2^386231965 is an apocalyptic number.

386231965 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

386231965 is a deficient number, since it is larger than the sum of its proper divisors (159004955).

386231965 is a wasteful number, since it uses less digits than its factorization.

386231965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17821 (or 17814 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 386231965 is about 19652.7851715730. The cubic root of 386231965 is about 728.2537638511.

The spelling of 386231965 in words is "three hundred eighty-six million, two hundred thirty-one thousand, nine hundred sixty-five".