1851157960 has 32 divisors (see below), whose sum is σ = 4170252600. Its totient is φ = 739548160.

The previous prime is 1851157949. The next prime is 1851158021. The reversal of 1851157960 is 697511581.

It can be written as a sum of positive squares in 4 ways, for example, as 814189156 + 1036968804 = 28534^2 + 32202^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4656 + ... + 61024.

Almost surely, 2^1851157960 is an apocalyptic number.

1851157960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1851157960 is an abundant number, since it is smaller than the sum of its proper divisors (2319094640).

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

1851157960 is a wasteful number, since it uses less digits than its factorization.

1851157960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57201 (or 57197 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 43.

The square root of 1851157960 is about 43025.0852410544. The cubic root of 1851157960 is about 1227.8571012193.

The spelling of 1851157960 in words is "one billion, eight hundred fifty-one million, one hundred fifty-seven thousand, nine hundred sixty".