381106915 has 8 divisors (see below), whose sum is σ = 522660960. Its totient is φ = 261330432.

The previous prime is 381106813. The next prime is 381106927. The reversal of 381106915 is 519601183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381106915 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5444350 + ... + 5444419.

It is an arithmetic number, because the mean of its divisors is an integer number (65332620).

Almost surely, 2^381106915 is an apocalyptic number.

381106915 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381106915 is a deficient number, since it is larger than the sum of its proper divisors (141554045).

381106915 is a wasteful number, since it uses less digits than its factorization.

381106915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888781.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 381106915 is about 19521.9598145268. The cubic root of 381106915 is about 725.0182571700.

The spelling of 381106915 in words is "three hundred eighty-one million, one hundred six thousand, nine hundred fifteen".