18160699806 has 24 divisors (see below), whose sum is σ = 40617480384. Its totient is φ = 5858290080.

The previous prime is 18160699793. The next prime is 18160699819. The reversal of 18160699806 is 60899606181.

It is an interprime number because it is at equal distance from previous prime (18160699793) and next prime (18160699819).

It is a super-2 number, since 2×18160699806² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16272471 + ... + 16273586.

It is an arithmetic number, because the mean of its divisors is an integer number (1692395016).

Almost surely, 2^18160699806 is an apocalyptic number.

18160699806 is an abundant number, since it is smaller than the sum of its proper divisors (22456780578).

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

18160699806 is a wasteful number, since it uses less digits than its factorization.

18160699806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32546096 (or 32546093 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 18160699806 in words is "eighteen billion, one hundred sixty million, six hundred ninety-nine thousand, eight hundred six".