381512632 has 16 divisors (see below), whose sum is σ = 740003400. Its totient is φ = 184178400.

The previous prime is 381512617. The next prime is 381512639. The reversal of 381512632 is 236215183.

It is a junction number, because it is equal to n+sod(n) for n = 381512594 and 381512603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381512639) 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, 821994 + ... + 822457.

Almost surely, 2^381512632 is an apocalyptic number.

It is an amenable number.

381512632 is a deficient number, since it is larger than the sum of its proper divisors (358490768).

381512632 is a wasteful number, since it uses less digits than its factorization.

381512632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644486 (or 1644482 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 381512632 is about 19532.3483483170. The cubic root of 381512632 is about 725.2754447640.

The spelling of 381512632 in words is "three hundred eighty-one million, five hundred twelve thousand, six hundred thirty-two".