18996007169 has 16 divisors (see below), whose sum is σ = 20202480000. Its totient is φ = 17811077760.

The previous prime is 18996007159. The next prime is 18996007181. The reversal of 18996007169 is 96170069981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18996007169 is a prime.

It is a super-2 number, since 2×18996007169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18996007159) 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, 783572 + ... + 807450.

It is an arithmetic number, because the mean of its divisors is an integer number (1262655000).

Almost surely, 2^18996007169 is an apocalyptic number.

18996007169 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18996007169 is a deficient number, since it is larger than the sum of its proper divisors (1206472831).

18996007169 is a wasteful number, since it uses less digits than its factorization.

18996007169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24328.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The spelling of 18996007169 in words is "eighteen billion, nine hundred ninety-six million, seven thousand, one hundred sixty-nine".