1138440811192 has 8 divisors (see below), whose sum is σ = 2134576521000. Its totient is φ = 569220405592.

The previous prime is 1138440811181. The next prime is 1138440811199. The reversal of 1138440811192 is 2911180448311.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138440811199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71152550692 + ... + 71152550707.

It is an arithmetic number, because the mean of its divisors is an integer number (266822065125).

Almost surely, 2^{1138440811192} is an apocalyptic number.

It is an amenable number.

1138440811192 is a deficient number, since it is larger than the sum of its proper divisors (996135709808).

1138440811192 is a wasteful number, since it uses less digits than its factorization.

1138440811192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142305101405 (or 142305101401 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 1138440811192 in words is "one trillion, one hundred thirty-eight billion, four hundred forty million, eight hundred eleven thousand, one hundred ninety-two".