381982626 has 12 divisors (see below), whose sum is σ = 827629062. Its totient is φ = 127327536.

The previous prime is 381982621. The next prime is 381982663. The reversal of 381982626 is 626289183.

381982626 is a `hidden beast` number, since 3 + 8 + 19 + 8 + 2 + 626 = 666.

It can be written as a sum of positive squares in only one way, i.e., 232532001 + 149450625 = 15249^2 + 12225^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381982621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10610611 + ... + 10610646.

Almost surely, 2^381982626 is an apocalyptic number.

381982626 is an abundant number, since it is smaller than the sum of its proper divisors (445646436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381982626 is a wasteful number, since it uses less digits than its factorization.

381982626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221265 (or 21221262 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 381982626 is about 19544.3758150523. The cubic root of 381982626 is about 725.5731502634.

The spelling of 381982626 in words is "three hundred eighty-one million, nine hundred eighty-two thousand, six hundred twenty-six".