381692392 has 16 divisors (see below), whose sum is σ = 717597540. Its totient is φ = 190333056.

The previous prime is 381692351. The next prime is 381692393. The reversal of 381692392 is 293296183.

It can be written as a sum of positive squares in 2 ways, for example, as 381264676 + 427716 = 19526^2 + 654^2 .

It is a super-2 number, since 2×381692392² = 291378164221363328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381692393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60973 + ... + 66940.

Almost surely, 2^381692392 is an apocalyptic number.

It is an amenable number.

381692392 is a deficient number, since it is larger than the sum of its proper divisors (335905148).

381692392 is a wasteful number, since it uses less digits than its factorization.

381692392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128292 (or 128288 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 381692392 is about 19536.9494036300. The cubic root of 381692392 is about 725.3893379283.

The spelling of 381692392 in words is "three hundred eighty-one million, six hundred ninety-two thousand, three hundred ninety-two".