1138579316 has 12 divisors (see below), whose sum is σ = 2277158688. Its totient is φ = 487962552.

The previous prime is 1138579303. The next prime is 1138579331. The reversal of 1138579316 is 6139758311.

1138579316 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20331746 + ... + 20331801.

It is an arithmetic number, because the mean of its divisors is an integer number (189763224).

Almost surely, 2^1138579316 is an apocalyptic number.

It is an amenable number.

1138579316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1138579316 is a wasteful number, since it uses less digits than its factorization.

1138579316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40663558 (or 40663556 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 1138579316 is about 33742.8409592316. The cubic root of 1138579316 is about 1044.2097964581.

The spelling of 1138579316 in words is "one billion, one hundred thirty-eight million, five hundred seventy-nine thousand, three hundred sixteen".