18537260016 has 240 divisors, whose sum is σ = 55785179520. Its totient is φ = 5285491200.

The previous prime is 18537259987. The next prime is 18537260017. The reversal of 18537260016 is 61006273581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18537260017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19090411 + ... + 19091381.

It is an arithmetic number, because the mean of its divisors is an integer number (232438248).

Almost surely, 2^18537260016 is an apocalyptic number.

18537260016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18537260016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27892589760).

18537260016 is an abundant number, since it is smaller than the sum of its proper divisors (37247919504).

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

18537260016 is a wasteful number, since it uses less digits than its factorization.

18537260016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 18537260016 in words is "eighteen billion, five hundred thirty-seven million, two hundred sixty thousand, sixteen".