1916956560 has 40 divisors (see below), whose sum is σ = 5942566080. Its totient is φ = 511188352.

The previous prime is 1916956549. The next prime is 1916956609. The reversal of 1916956560 is 656596191.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3993420 + ... + 3993899.

It is an arithmetic number, because the mean of its divisors is an integer number (148564152).

Almost surely, 2^1916956560 is an apocalyptic number.

1916956560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1916956560 is an abundant number, since it is smaller than the sum of its proper divisors (4025609520).

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

1916956560 is a wasteful number, since it uses less digits than its factorization.

1916956560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987335 (or 7987329 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 1916956560 is about 43783.0624785430. The cubic root of 1916956560 is about 1242.2359414945.

The spelling of 1916956560 in words is "one billion, nine hundred sixteen million, nine hundred fifty-six thousand, five hundred sixty".