1869252057 has 12 divisors (see below), whose sum is σ = 2704783380. Its totient is φ = 1243974528.

The previous prime is 1869252041. The next prime is 1869252079. The reversal of 1869252057 is 7502529681.

1869252057 is a `hidden beast` number, since 18 + 69 + 2 + 520 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1017546201 + 851705856 = 31899^2 + 29184^2 .

It is not a de Polignac number, because 1869252057 - 2⁴ = 1869252041 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1869252037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177388 + ... + 187629.

It is an arithmetic number, because the mean of its divisors is an integer number (225398615).

Almost surely, 2^1869252057 is an apocalyptic number.

It is an amenable number.

1869252057 is a deficient number, since it is larger than the sum of its proper divisors (835531323).

1869252057 is a wasteful number, since it uses less digits than its factorization.

1869252057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365592 (or 365589 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1869252057 is about 43234.8477157027. The cubic root of 1869252057 is about 1231.8446899095.

The spelling of 1869252057 in words is "one billion, eight hundred sixty-nine million, two hundred fifty-two thousand, fifty-seven".