18047829774 has 32 divisors (see below), whose sum is σ = 38996493984. Its totient is φ = 5535429120.

The previous prime is 18047829769. The next prime is 18047829781. The reversal of 18047829774 is 47792874081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345207 + ... + 394034.

It is an arithmetic number, because the mean of its divisors is an integer number (1218640437).

Almost surely, 2^18047829774 is an apocalyptic number.

18047829774 is an abundant number, since it is smaller than the sum of its proper divisors (20948664210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18047829774 is a wasteful number, since it uses less digits than its factorization.

18047829774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739572.

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 18047829774 in words is "eighteen billion, forty-seven million, eight hundred twenty-nine thousand, seven hundred seventy-four".