381058506 has 32 divisors (see below), whose sum is σ = 857260800. Its totient is φ = 127018044.

The previous prime is 381058501. The next prime is 381058511. The reversal of 381058506 is 605850183.

It is an interprime number because it is at equal distance from previous prime (381058501) and next prime (381058511).

It is not an unprimeable number, because it can be changed into a prime (381058501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39186 + ... + 47933.

It is an arithmetic number, because the mean of its divisors is an integer number (26789400).

Almost surely, 2^381058506 is an apocalyptic number.

381058506 is an abundant number, since it is smaller than the sum of its proper divisors (476202294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381058506 is an frugal number, since it uses more digits than its factorization.

381058506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87142 (or 87124 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 381058506 is about 19520.7199150031. The cubic root of 381058506 is about 724.9875580901.

The spelling of 381058506 in words is "three hundred eighty-one million, fifty-eight thousand, five hundred six".