18672494099 has 16 divisors (see below), whose sum is σ = 21409629696. Its totient is φ = 15952852800.

The previous prime is 18672494081. The next prime is 18672494101. The reversal of 18672494099 is 99049427681.

It is a cyclic number.

It is not a de Polignac number, because 18672494099 - 2⁸ = 18672493843 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18672404099) 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, 3307319 + ... + 3312959.

It is an arithmetic number, because the mean of its divisors is an integer number (1338101856).

Almost surely, 2^18672494099 is an apocalyptic number.

18672494099 is a deficient number, since it is larger than the sum of its proper divisors (2737135597).

18672494099 is an equidigital number, since it uses as much as digits as its factorization.

18672494099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7106.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 18672494099 in words is "eighteen billion, six hundred seventy-two million, four hundred ninety-four thousand, ninety-nine".