18316792749 has 16 divisors (see below), whose sum is σ = 25924166208. Its totient is φ = 11463927552.

The previous prime is 18316792723. The next prime is 18316792757. The reversal of 18316792749 is 94729761381.

It is a happy number.

It is not a de Polignac number, because 18316792749 - 2⁸ = 18316792493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18316792709) 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, 432087 + ... + 472580.

It is an arithmetic number, because the mean of its divisors is an integer number (1620260388).

Almost surely, 2^18316792749 is an apocalyptic number.

It is an amenable number.

18316792749 is a deficient number, since it is larger than the sum of its proper divisors (7607373459).

18316792749 is a wasteful number, since it uses less digits than its factorization.

18316792749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905084.

The product of its digits is 4572288, while the sum is 57.

The spelling of 18316792749 in words is "eighteen billion, three hundred sixteen million, seven hundred ninety-two thousand, seven hundred forty-nine".