18493129761 has 16 divisors (see below), whose sum is σ = 26142009600. Its totient is φ = 11595838608.

The previous prime is 18493129757. The next prime is 18493129777. The reversal of 18493129761 is 16792139481.

It is not a de Polignac number, because 18493129761 - 2² = 18493129757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18493121761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159131 + ... + 1174976.

It is an arithmetic number, because the mean of its divisors is an integer number (1633875600).

Almost surely, 2^18493129761 is an apocalyptic number.

It is an amenable number.

18493129761 is a deficient number, since it is larger than the sum of its proper divisors (7648879839).

18493129761 is a wasteful number, since it uses less digits than its factorization.

18493129761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334268.

The product of its digits is 653184, while the sum is 51.

The spelling of 18493129761 in words is "eighteen billion, four hundred ninety-three million, one hundred twenty-nine thousand, seven hundred sixty-one".