18049474707 has 16 divisors (see below), whose sum is σ = 27635560320. Its totient is φ = 10363334400.

The previous prime is 18049474697. The next prime is 18049474727. The reversal of 18049474707 is 70747494081.

It is not a de Polignac number, because 18049474707 - 2⁸ = 18049474451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18049474707.

It is not an unprimeable number, because it can be changed into a prime (18049474727) 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, 14392894 + ... + 14394147.

It is an arithmetic number, because the mean of its divisors is an integer number (1727222520).

Almost surely, 2^18049474707 is an apocalyptic number.

18049474707 is a deficient number, since it is larger than the sum of its proper divisors (9586085613).

18049474707 is a wasteful number, since it uses less digits than its factorization.

18049474707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28787074.

The product of its (nonzero) digits is 1580544, while the sum is 51.

The spelling of 18049474707 in words is "eighteen billion, forty-nine million, four hundred seventy-four thousand, seven hundred seven".