1138887488 has 28 divisors (see below), whose sum is σ = 2287219200. Its totient is φ = 562580352.

The previous prime is 1138887469. The next prime is 1138887539. The reversal of 1138887488 is 8847888311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101888 + ... + 112511.

It is an arithmetic number, because the mean of its divisors is an integer number (81686400).

Almost surely, 2^1138887488 is an apocalyptic number.

It is an amenable number.

1138887488 is an abundant number, since it is smaller than the sum of its proper divisors (1148331712).

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

1138887488 is an equidigital number, since it uses as much as digits as its factorization.

1138887488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214494 (or 214484 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 56.

The square root of 1138887488 is about 33747.4071300300. The cubic root of 1138887488 is about 1044.3039978277.

The spelling of 1138887488 in words is "one billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, four hundred eighty-eight".