1915215960 has 512 divisors, whose sum is σ = 7372800000. Its totient is φ = 396264960.

The previous prime is 1915215959. The next prime is 1915215961. The reversal of 1915215960 is 695125191.

It is an interprime number because it is at equal distance from previous prime (1915215959) and next prime (1915215961).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915215961) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24243201 + ... + 24243279.

It is an arithmetic number, because the mean of its divisors is an integer number (14400000).

Almost surely, 2^1915215960 is an apocalyptic number.

1915215960 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 1915215960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3686400000).

1915215960 is an abundant number, since it is smaller than the sum of its proper divisors (5457584040).

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

1915215960 is a wasteful number, since it uses less digits than its factorization.

1915215960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 39.

The square root of 1915215960 is about 43763.1804145905. The cubic root of 1915215960 is about 1241.8598434835.

The spelling of 1915215960 in words is "one billion, nine hundred fifteen million, two hundred fifteen thousand, nine hundred sixty".