18357448929 has 16 divisors (see below), whose sum is σ = 25969650048. Its totient is φ = 11494732032.

The previous prime is 18357448883. The next prime is 18357448943. The reversal of 18357448929 is 92984475381.

It is not a de Polignac number, because 18357448929 - 2⁷ = 18357448801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18357448969) 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, 344722 + ... + 394395.

It is an arithmetic number, because the mean of its divisors is an integer number (1623103128).

Almost surely, 2^18357448929 is an apocalyptic number.

It is an amenable number.

18357448929 is a deficient number, since it is larger than the sum of its proper divisors (7612201119).

18357448929 is a wasteful number, since it uses less digits than its factorization.

18357448929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739624.

The product of its digits is 17418240, while the sum is 60.

The spelling of 18357448929 in words is "eighteen billion, three hundred fifty-seven million, four hundred forty-eight thousand, nine hundred twenty-nine".