2118885507 has 16 divisors (see below), whose sum is σ = 3139876480. Its totient is φ = 1412236296.

The previous prime is 2118885499. The next prime is 2118885523. The reversal of 2118885507 is 7055888112.

2118885507 is a `hidden beast` number, since 2 + 1 + 18 + 88 + 550 + 7 = 666.

It is not a de Polignac number, because 2118885507 - 2³ = 2118885499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118885707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143148 + ... + 157254.

It is an arithmetic number, because the mean of its divisors is an integer number (196242280).

Almost surely, 2^2118885507 is an apocalyptic number.

2118885507 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2118885507 is a deficient number, since it is larger than the sum of its proper divisors (1020990973).

2118885507 is a wasteful number, since it uses less digits than its factorization.

2118885507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19679 (or 19673 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The square root of 2118885507 is about 46031.3535212685. The cubic root of 2118885507 is about 1284.4065061481.

The spelling of 2118885507 in words is "two billion, one hundred eighteen million, eight hundred eighty-five thousand, five hundred seven".