1181375688690 has 48 divisors (see below), whose sum is σ = 3252257782488. Its totient is φ = 296502133248.

The previous prime is 1181375688683. The next prime is 1181375688733. The reversal of 1181375688690 is 968865731811.

1181375688690 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 3 + 7 + 568 + 8 + 69 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1024105544361 + 157270144329 = 1011981^2 + 396573^2 .

It is a super-2 number, since 2×1181375688690² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386068957 + ... + 386072016.

Almost surely, 2^{1181375688690} is an apocalyptic number.

1181375688690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1181375688690 is an abundant number, since it is smaller than the sum of its proper divisors (2070882093798).

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

1181375688690 is a wasteful number, since it uses less digits than its factorization.

1181375688690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772141003 (or 772141000 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 1181375688690 in words is "one trillion, one hundred eighty-one billion, three hundred seventy-five million, six hundred eighty-eight thousand, six hundred ninety".