18166702037 has 16 divisors (see below), whose sum is σ = 20043538560. Its totient is φ = 16327896000.

The previous prime is 18166702033. The next prime is 18166702051. The reversal of 18166702037 is 73020766181.

It is a cyclic number.

It is not a de Polignac number, because 18166702037 - 2² = 18166702033 is a prime.

It is a super-2 number, since 2×18166702037² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18166701985 and 18166702003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18166702031) 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, 776168 + ... + 799230.

It is an arithmetic number, because the mean of its divisors is an integer number (1252721160).

Almost surely, 2^18166702037 is an apocalyptic number.

It is an amenable number.

18166702037 is a deficient number, since it is larger than the sum of its proper divisors (1876836523).

18166702037 is a wasteful number, since it uses less digits than its factorization.

18166702037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23884.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 18166702037 in words is "eighteen billion, one hundred sixty-six million, seven hundred two thousand, thirty-seven".