18023994294 has 32 divisors (see below), whose sum is σ = 36902131200. Its totient is φ = 5865760992.

The previous prime is 18023994293. The next prime is 18023994319. The reversal of 18023994294 is 49249932081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023994293) 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, 643939 + ... + 671345.

It is an arithmetic number, because the mean of its divisors is an integer number (1153191600).

Almost surely, 2^18023994294 is an apocalyptic number.

18023994294 is an abundant number, since it is smaller than the sum of its proper divisors (18878136906).

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

18023994294 is a wasteful number, since it uses less digits than its factorization.

18023994294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30004.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 18023994294 in words is "eighteen billion, twenty-three million, nine hundred ninety-four thousand, two hundred ninety-four".