1851786852 has 24 divisors (see below), whose sum is σ = 4330826976. Its totient is φ = 615835008.

The previous prime is 1851786847. The next prime is 1851786857. The reversal of 1851786852 is 2586871581.

It is an interprime number because it is at equal distance from previous prime (1851786847) and next prime (1851786857).

It is a super-2 number, since 2×1851786852² = 6858229090480139808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1851786795 and 1851786804.

It is not an unprimeable number, because it can be changed into a prime (1851786857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172998 + ... + 183389.

It is an arithmetic number, because the mean of its divisors is an integer number (180451124).

Almost surely, 2^1851786852 is an apocalyptic number.

1851786852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1851786852 is an abundant number, since it is smaller than the sum of its proper divisors (2479040124).

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

1851786852 is a wasteful number, since it uses less digits than its factorization.

1851786852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356827 (or 356825 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 51.

The square root of 1851786852 is about 43032.3930545351. The cubic root of 1851786852 is about 1227.9961316886.

The spelling of 1851786852 in words is "one billion, eight hundred fifty-one million, seven hundred eighty-six thousand, eight hundred fifty-two".