1538379808 has 48 divisors (see below), whose sum is σ = 3508807680. Its totient is φ = 650267136.

The previous prime is 1538379779. The next prime is 1538379833. The reversal of 1538379808 is 8089738351.

It is a super-2 number, since 2×1538379808² = 4733224867324233728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30688 + ... + 63391.

It is an arithmetic number, because the mean of its divisors is an integer number (73100160).

Almost surely, 2^1538379808 is an apocalyptic number.

It is an amenable number.

1538379808 is an abundant number, since it is smaller than the sum of its proper divisors (1970427872).

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

1538379808 is an equidigital number, since it uses as much as digits as its factorization.

1538379808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94169 (or 94161 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 1538379808 is about 39222.1851507536. The cubic root of 1538379808 is about 1154.3952302017.

The spelling of 1538379808 in words is "one billion, five hundred thirty-eight million, three hundred seventy-nine thousand, eight hundred eight".