1855265568 has 48 divisors (see below), whose sum is σ = 5244696576. Its totient is φ = 570850560.

The previous prime is 1855265567. The next prime is 1855265579. The reversal of 1855265568 is 8655625581.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1855265568.

It is not an unprimeable number, because it can be changed into a prime (1855265563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742048 + ... + 744543.

It is an arithmetic number, because the mean of its divisors is an integer number (109264512).

Almost surely, 2^1855265568 is an apocalyptic number.

It is an amenable number.

1855265568 is an abundant number, since it is smaller than the sum of its proper divisors (3389431008).

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

1855265568 is a wasteful number, since it uses less digits than its factorization.

1855265568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486617 (or 1486609 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 51.

The square root of 1855265568 is about 43072.7938262658. The cubic root of 1855265568 is about 1228.7646106277.

The spelling of 1855265568 in words is "one billion, eight hundred fifty-five million, two hundred sixty-five thousand, five hundred sixty-eight".