1869870564 has 27 divisors (see below), whose sum is σ = 4727273187. Its totient is φ = 623203704.

The previous prime is 1869870529. The next prime is 1869870571. The reversal of 1869870564 is 4650789681.

The square root of 1869870564 is 43242.

It is a perfect power (a square), and thus also a powerful number.

1869870564 is a `hidden beast` number, since 1 + 8 + 6 + 9 + 8 + 70 + 564 = 666.

It is a super-2 number, since 2×1869870564² = 6992831852227356192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1869870564.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 255849 + ... + 263055.

Almost surely, 2^1869870564 is an apocalyptic number.

1869870564 is the 43242-nd square number.

It is an amenable number.

1869870564 is an abundant number, since it is smaller than the sum of its proper divisors (2857402623).

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

1869870564 is an frugal number, since it uses more digits than its factorization.

1869870564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14424 (or 7212 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The cubic root of 1869870564 is about 1231.9805411344.

The spelling of 1869870564 in words is "one billion, eight hundred sixty-nine million, eight hundred seventy thousand, five hundred sixty-four".