381492885 has 16 divisors (see below), whose sum is σ = 611306496. Its totient is φ = 203156928.

The previous prime is 381492877. The next prime is 381492889. The reversal of 381492885 is 588294183.

It is not a de Polignac number, because 381492885 - 2³ = 381492877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381492889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8629 + ... + 28938.

It is an arithmetic number, because the mean of its divisors is an integer number (38206656).

Almost surely, 2^381492885 is an apocalyptic number.

It is an amenable number.

381492885 is a deficient number, since it is larger than the sum of its proper divisors (229813611).

381492885 is a wasteful number, since it uses less digits than its factorization.

381492885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38252.

The product of its digits is 552960, while the sum is 48.

The square root of 381492885 is about 19531.8428470024. The cubic root of 381492885 is about 725.2629311886.

The spelling of 381492885 in words is "three hundred eighty-one million, four hundred ninety-two thousand, eight hundred eighty-five".