381389090 has 32 divisors (see below), whose sum is σ = 731808000. Its totient is φ = 142691328.

The previous prime is 381389069. The next prime is 381389153. The reversal of 381389090 is 90983183.

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, 2306 + ... + 27714.

It is an arithmetic number, because the mean of its divisors is an integer number (22869000).

Almost surely, 2^381389090 is an apocalyptic number.

381389090 is a deficient number, since it is larger than the sum of its proper divisors (350418910).

381389090 is a wasteful number, since it uses less digits than its factorization.

381389090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 381389090 is about 19529.1855948987. The cubic root of 381389090 is about 725.1971497135.

The spelling of 381389090 in words is "three hundred eighty-one million, three hundred eighty-nine thousand, ninety".