18255837845 has 64 divisors (see below), whose sum is σ = 26287472640. Its totient is φ = 11908166400.

The previous prime is 18255837841. The next prime is 18255837881. The reversal of 18255837845 is 54873855281.

It is not a de Polignac number, because 18255837845 - 2² = 18255837841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18255837841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31971410 + ... + 31971980.

It is an arithmetic number, because the mean of its divisors is an integer number (410741760).

Almost surely, 2^18255837845 is an apocalyptic number.

It is an amenable number.

18255837845 is a deficient number, since it is larger than the sum of its proper divisors (8031634795).

18255837845 is a wasteful number, since it uses less digits than its factorization.

18255837845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its digits is 10752000, while the sum is 56.

The spelling of 18255837845 in words is "eighteen billion, two hundred fifty-five million, eight hundred thirty-seven thousand, eight hundred forty-five".