1151783318538 has 96 divisors (see below), whose sum is σ = 2785597102080. Its totient is φ = 342247242240.

The previous prime is 1151783318503. The next prime is 1151783318549. The reversal of 1151783318538 is 8358133871511.

1151783318538 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 78 + 3 + 31 + 8 + 538 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 845853 + ... + 1737536.

It is an arithmetic number, because the mean of its divisors is an integer number (29016636480).

Almost surely, 2^{1151783318538} is an apocalyptic number.

1151783318538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1151783318538 is an abundant number, since it is smaller than the sum of its proper divisors (1633813783542).

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

1151783318538 is a wasteful number, since it uses less digits than its factorization.

1151783318538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583492 (or 2583489 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The spelling of 1151783318538 in words is "one trillion, one hundred fifty-one billion, seven hundred eighty-three million, three hundred eighteen thousand, five hundred thirty-eight".