18902106099 has 12 divisors (see below), whose sum is σ = 27403794912. Its totient is φ = 12554902800.

The previous prime is 18902106089. The next prime is 18902106101. The reversal of 18902106099 is 99060120981.

18902106099 is a `hidden beast` number, since 18 + 9 + 0 + 21 + 0 + 609 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-18902106099 is a prime.

It is a super-2 number, since 2×18902106099² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18902106059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3872532 + ... + 3877409.

It is an arithmetic number, because the mean of its divisors is an integer number (2283649576).

Almost surely, 2^18902106099 is an apocalyptic number.

18902106099 is a deficient number, since it is larger than the sum of its proper divisors (8501688813).

18902106099 is a wasteful number, since it uses less digits than its factorization.

18902106099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750218 (or 7750215 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 18902106099 in words is "eighteen billion, nine hundred two million, one hundred six thousand, ninety-nine".