1138208996 has 24 divisors (see below), whose sum is σ = 2018278080. Its totient is φ = 561596000.

The previous prime is 1138208993. The next prime is 1138208999. The reversal of 1138208996 is 6998028311.

It is an interprime number because it is at equal distance from previous prime (1138208993) and next prime (1138208999).

It is a self number, because there is not a number n which added to its sum of digits gives 1138208996.

It is not an unprimeable number, because it can be changed into a prime (1138208993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121115 + ... + 130173.

It is an arithmetic number, because the mean of its divisors is an integer number (84094920).

Almost surely, 2^1138208996 is an apocalyptic number.

It is an amenable number.

1138208996 is a deficient number, since it is larger than the sum of its proper divisors (880069084).

1138208996 is a wasteful number, since it uses less digits than its factorization.

1138208996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9475 (or 9473 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 1138208996 is about 33737.3531267644. The cubic root of 1138208996 is about 1044.0965753303.

The spelling of 1138208996 in words is "one billion, one hundred thirty-eight million, two hundred eight thousand, nine hundred ninety-six".