381120755 has 16 divisors (see below), whose sum is σ = 473821920. Its totient is φ = 293943552.

The previous prime is 381120743. The next prime is 381120763. The reversal of 381120755 is 557021183.

It is a cyclic number.

It is not a de Polignac number, because 381120755 - 2⁸ = 381120499 is a prime.

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, 122732 + ... + 125798.

It is an arithmetic number, because the mean of its divisors is an integer number (29613870).

Almost surely, 2^381120755 is an apocalyptic number.

381120755 is a deficient number, since it is larger than the sum of its proper divisors (92701165).

381120755 is a wasteful number, since it uses less digits than its factorization.

381120755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 381120755 is about 19522.3142839162. The cubic root of 381120755 is about 725.0270334747.

The spelling of 381120755 in words is "three hundred eighty-one million, one hundred twenty thousand, seven hundred fifty-five".