18501853350038 has 4 divisors (see below), whose sum is σ = 27752780025060. Its totient is φ = 9250926675018.

The previous prime is 18501853350011. The next prime is 18501853350049. The reversal of 18501853350038 is 83005335810581.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4625463337508 + ... + 4625463337511.

It is an arithmetic number, because the mean of its divisors is an integer number (6938195006265).

Almost surely, 2^{18501853350038} is an apocalyptic number.

18501853350038 is a deficient number, since it is larger than the sum of its proper divisors (9250926675022).

18501853350038 is an equidigital number, since it uses as much as digits as its factorization.

18501853350038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250926675021.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 18501853350038 in words is "eighteen trillion, five hundred one billion, eight hundred fifty-three million, three hundred fifty thousand, thirty-eight".