381895432 has 16 divisors (see below), whose sum is σ = 740745900. Its totient is φ = 184363200.

The previous prime is 381895399. The next prime is 381895447. The reversal of 381895432 is 234598183.

It can be written as a sum of positive squares in 2 ways, for example, as 378458116 + 3437316 = 19454^2 + 1854^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822819 + ... + 823282.

Almost surely, 2^381895432 is an apocalyptic number.

It is an amenable number.

381895432 is a deficient number, since it is larger than the sum of its proper divisors (358850468).

381895432 is a wasteful number, since it uses less digits than its factorization.

381895432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646136 (or 1646132 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 381895432 is about 19542.1450204424. The cubic root of 381895432 is about 725.5179379445.

The spelling of 381895432 in words is "three hundred eighty-one million, eight hundred ninety-five thousand, four hundred thirty-two".