381588785 has 16 divisors (see below), whose sum is σ = 469572096. Its totient is φ = 297589248.

The previous prime is 381588743. The next prime is 381588811. The reversal of 381588785 is 587885183.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 381588785 - 2²⁸ = 113153329 is a prime.

It is a super-2 number, since 2×381588785² = 291220001675552450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26624 + ... + 38366.

It is an arithmetic number, because the mean of its divisors is an integer number (29348256).

Almost surely, 2^381588785 is an apocalyptic number.

It is an amenable number.

381588785 is a deficient number, since it is larger than the sum of its proper divisors (87983311).

381588785 is a wasteful number, since it uses less digits than its factorization.

381588785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11912.

The product of its digits is 2150400, while the sum is 53.

The square root of 381588785 is about 19534.2976582216. The cubic root of 381588785 is about 725.3236984974.

The spelling of 381588785 in words is "three hundred eighty-one million, five hundred eighty-eight thousand, seven hundred eighty-five".