1139611808 has 12 divisors (see below), whose sum is σ = 2243610810. Its totient is φ = 569805888.

The previous prime is 1139611799. The next prime is 1139611861. The reversal of 1139611808 is 8081169311.

It can be written as a sum of positive squares in only one way, i.e., 1043806864 + 95804944 = 32308^2 + 9788^2 .

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 as a sum of consecutive naturals, namely, 17806403 + ... + 17806466.

Almost surely, 2^1139611808 is an apocalyptic number.

It is an amenable number.

1139611808 is a deficient number, since it is larger than the sum of its proper divisors (1103999002).

1139611808 is an equidigital number, since it uses as much as digits as its factorization.

1139611808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35612879 (or 35612871 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 1139611808 is about 33758.1369154164. The cubic root of 1139611808 is about 1044.5253395553.

The spelling of 1139611808 in words is "one billion, one hundred thirty-nine million, six hundred eleven thousand, eight hundred eight".