18837149263440 has 320 divisors, whose sum is σ = 60926100480000. Its totient is φ = 4809265920000.

The previous prime is 18837149263421. The next prime is 18837149263453. The reversal of 18837149263440 is 4436294173881.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 278214711 + ... + 278282409.

It is an arithmetic number, because the mean of its divisors is an integer number (190394064000).

Almost surely, 2^{18837149263440} is an apocalyptic number.

18837149263440 is a gapful number since it is divisible by the number (10) 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 18837149263440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30463050240000).

18837149263440 is an abundant number, since it is smaller than the sum of its proper divisors (42088951216560).

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

18837149263440 is a wasteful number, since it uses less digits than its factorization.

18837149263440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68146 (or 68140 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 18837149263440 in words is "eighteen trillion, eight hundred thirty-seven billion, one hundred forty-nine million, two hundred sixty-three thousand, four hundred forty".