3894638315 has 32 divisors (see below), whose sum is σ = 4918627584. Its totient is φ = 2956953600.

The previous prime is 3894638281. The next prime is 3894638401. The reversal of 3894638315 is 5138364983.

It is not a de Polignac number, because 3894638315 - 2²⁶ = 3827529451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3486137 + ... + 3487253.

It is an arithmetic number, because the mean of its divisors is an integer number (153707112).

Almost surely, 2^3894638315 is an apocalyptic number.

3894638315 is a deficient number, since it is larger than the sum of its proper divisors (1023989269).

3894638315 is a wasteful number, since it uses less digits than its factorization.

3894638315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607.

The product of its digits is 1866240, while the sum is 50.

The square root of 3894638315 is about 62407.0373836156. The cubic root of 3894638315 is about 1573.3392508765.

The spelling of 3894638315 in words is "three billion, eight hundred ninety-four million, six hundred thirty-eight thousand, three hundred fifteen".