1915486560 has 432 divisors, whose sum is σ = 7510636224. Its totient is φ = 442810368.

The previous prime is 1915486553. The next prime is 1915486583. The reversal of 1915486560 is 656845191.

1915486560 is a `hidden beast` number, since 1 + 9 + 1 + 5 + 4 + 86 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4136889 + ... + 4137351.

It is an arithmetic number, because the mean of its divisors is an integer number (17385732).

Almost surely, 2^1915486560 is an apocalyptic number.

1915486560 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 1915486560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3755318112).

1915486560 is an abundant number, since it is smaller than the sum of its proper divisors (5595149664).

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

1915486560 is a wasteful number, since it uses less digits than its factorization.

1915486560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1915486560 is about 43766.2719454148. The cubic root of 1915486560 is about 1241.9183280017.

The spelling of 1915486560 in words is "one billion, nine hundred fifteen million, four hundred eighty-six thousand, five hundred sixty".