381590 has 16 divisors (see below), whose sum is σ = 749520. Its totient is φ = 138720.

The previous prime is 381569. The next prime is 381607. The reversal of 381590 is 95183.

It is a super-2 number, since 2×381590² = 291221856200, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381590.

It is an unprimeable number.

381590 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (46845).

2³⁸¹⁵⁹⁰ is an apocalyptic number.

381590 is a deficient number, since it is larger than the sum of its proper divisors (367930).

381590 is a wasteful number, since it uses less digits than its factorization.

381590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 381590 is about 617.7297143573. The cubic root of 381590 is about 72.5324468320.

The spelling of 381590 in words is "three hundred eighty-one thousand, five hundred ninety".