1864274560 has 32 divisors (see below), whose sum is σ = 4456782900. Its totient is φ = 745709568.

The previous prime is 1864274557. The next prime is 1864274569. The reversal of 1864274560 is 654724681.

It can be written as a sum of positive squares in 2 ways, for example, as 1864166976 + 107584 = 43176^2 + 328^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1864274569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455825 + ... + 1457104.

Almost surely, 2^1864274560 is an apocalyptic number.

1864274560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864274560 is an abundant number, since it is smaller than the sum of its proper divisors (2592508340).

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

1864274560 is an equidigital number, since it uses as much as digits as its factorization.

1864274560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912948 (or 2912936 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 1864274560 is about 43177.2458593644. The cubic root of 1864274560 is about 1230.7503210556.

The spelling of 1864274560 in words is "one billion, eight hundred sixty-four million, two hundred seventy-four thousand, five hundred sixty".