381380817 has 32 divisors (see below), whose sum is σ = 539090944. Its totient is φ = 239500800.

The previous prime is 381380807. The next prime is 381380819. The reversal of 381380817 is 718083183.

It is not a de Polignac number, because 381380817 - 2⁸ = 381380561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381380819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604092 + ... + 604722.

It is an arithmetic number, because the mean of its divisors is an integer number (16846592).

Almost surely, 2^381380817 is an apocalyptic number.

It is an amenable number.

381380817 is a deficient number, since it is larger than the sum of its proper divisors (157710127).

381380817 is a wasteful number, since it uses less digits than its factorization.

381380817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 381380817 is about 19528.9737825622. The cubic root of 381380817 is about 725.1919060751.

The spelling of 381380817 in words is "three hundred eighty-one million, three hundred eighty thousand, eight hundred seventeen".