381158817 has 8 divisors (see below), whose sum is σ = 547305024. Its totient is φ = 234559248.

The previous prime is 381158809. The next prime is 381158839. The reversal of 381158817 is 718851183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381158817 - 2³ = 381158809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381158807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4886613 + ... + 4886690.

It is an arithmetic number, because the mean of its divisors is an integer number (68413128).

Almost surely, 2^381158817 is an apocalyptic number.

It is an amenable number.

381158817 is a deficient number, since it is larger than the sum of its proper divisors (166146207).

381158817 is a wasteful number, since it uses less digits than its factorization.

381158817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773319.

The product of its digits is 53760, while the sum is 42.

The square root of 381158817 is about 19523.2890927733. The cubic root of 381158817 is about 725.0511684853.

The spelling of 381158817 in words is "three hundred eighty-one million, one hundred fifty-eight thousand, eight hundred seventeen".