6415332381 has 32 divisors (see below), whose sum is σ = 10190707200. Its totient is φ = 3974330880.

The previous prime is 6415332317. The next prime is 6415332419. The reversal of 6415332381 is 1832335146.

6415332381 is a `hidden beast` number, since 6 + 41 + 533 + 2 + 3 + 81 = 666.

6415332381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6415332381 - 2⁶ = 6415332317 is a prime.

It is a super-2 number, since 2×6415332381² = 82312979117414258322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6415337381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52200 + ... + 124721.

It is an arithmetic number, because the mean of its divisors is an integer number (318459600).

Almost surely, 2^6415332381 is an apocalyptic number.

It is an amenable number.

6415332381 is a deficient number, since it is larger than the sum of its proper divisors (3775374819).

6415332381 is a wasteful number, since it uses less digits than its factorization.

6415332381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177026 (or 177020 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6415332381 is about 80095.7700568513. The cubic root of 6415332381 is about 1858.1169887169.

The spelling of 6415332381 in words is "six billion, four hundred fifteen million, three hundred thirty-two thousand, three hundred eighty-one".