1915238880780 has 192 divisors, whose sum is σ = 5590867968000. Its totient is φ = 489347389440.

The previous prime is 1915238880767. The next prime is 1915238880833. The reversal of 1915238880780 is 870888325191.

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

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, 86733781 + ... + 86755859.

It is an arithmetic number, because the mean of its divisors is an integer number (29119104000).

Almost surely, 2^{1915238880780} is an apocalyptic number.

1915238880780 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 1915238880780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2795433984000).

1915238880780 is an abundant number, since it is smaller than the sum of its proper divisors (3675629087220).

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

1915238880780 is a wasteful number, since it uses less digits than its factorization.

1915238880780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22584 (or 22582 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 60.

The spelling of 1915238880780 in words is "one trillion, nine hundred fifteen billion, two hundred thirty-eight million, eight hundred eighty thousand, seven hundred eighty".