1915840137848 has 32 divisors (see below), whose sum is σ = 4421169550560. Its totient is φ = 757914779520.

The previous prime is 1915840137833. The next prime is 1915840137851. The reversal of 1915840137848 is 8487310485191.

It is a happy number.

It is a super-2 number, since 2×1915840137848² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315823543 + ... + 1315824998.

It is an arithmetic number, because the mean of its divisors is an integer number (138161548455).

Almost surely, 2^{1915840137848} is an apocalyptic number.

It is an amenable number.

1915840137848 is an abundant number, since it is smaller than the sum of its proper divisors (2505329412712).

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

1915840137848 is a wasteful number, since it uses less digits than its factorization.

1915840137848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631648567 (or 2631648563 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 59.

The spelling of 1915840137848 in words is "one trillion, nine hundred fifteen billion, eight hundred forty million, one hundred thirty-seven thousand, eight hundred forty-eight".