1117990636 has 12 divisors (see below), whose sum is σ = 2235981328. Its totient is φ = 479138832.

The previous prime is 1117990607. The next prime is 1117990649. The reversal of 1117990636 is 6360997111.

1117990636 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1117990592 and 1117990601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19964091 + ... + 19964146.

Almost surely, 2^1117990636 is an apocalyptic number.

It is an amenable number.

1117990636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1117990636 is a wasteful number, since it uses less digits than its factorization.

1117990636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39928248 (or 39928246 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1117990636 is about 33436.3669677194. The cubic root of 1117990636 is about 1037.8774003402.

The spelling of 1117990636 in words is "one billion, one hundred seventeen million, nine hundred ninety thousand, six hundred thirty-six".