381091732 has 24 divisors (see below), whose sum is σ = 764464064. Its totient is φ = 162836352.

The previous prime is 381091727. The next prime is 381091741. The reversal of 381091732 is 237190183.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10758 + ... + 29629.

Almost surely, 2^381091732 is an apocalyptic number.

It is an amenable number.

381091732 is an abundant number, since it is smaller than the sum of its proper divisors (383372332).

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

381091732 is a wasteful number, since it uses less digits than its factorization.

381091732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40735 (or 40733 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 381091732 is about 19521.5709408849. The cubic root of 381091732 is about 725.0086289896.

The spelling of 381091732 in words is "three hundred eighty-one million, ninety-one thousand, seven hundred thirty-two".