1852565140 has 36 divisors (see below), whose sum is σ = 4132707516. Its totient is φ = 697434112.

The previous prime is 1852565041. The next prime is 1852565147. The reversal of 1852565140 is 415652581.

It can be written as a sum of positive squares in 6 ways, for example, as 13527684 + 1839037456 = 3678^2 + 42884^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1852565140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1852565147) 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, 154477 + ... + 166036.

It is an arithmetic number, because the mean of its divisors is an integer number (114797431).

Almost surely, 2^1852565140 is an apocalyptic number.

1852565140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1852565140 is an abundant number, since it is smaller than the sum of its proper divisors (2280142376).

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

1852565140 is a wasteful number, since it uses less digits than its factorization.

1852565140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320556 (or 320537 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 1852565140 is about 43041.4351526526. The cubic root of 1852565140 is about 1228.1681458683.

The spelling of 1852565140 in words is "one billion, eight hundred fifty-two million, five hundred sixty-five thousand, one hundred forty".