1802861992 has 64 divisors (see below), whose sum is σ = 3615840000. Its totient is φ = 840812544.

The previous prime is 1802861981. The next prime is 1802861993. The reversal of 1802861992 is 2991682081.

It is a super-2 number, since 2×1802861992² = 6500622724396416128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (1802861993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1940184 + ... + 1941112.

It is an arithmetic number, because the mean of its divisors is an integer number (56497500).

Almost surely, 2^1802861992 is an apocalyptic number.

It is an amenable number.

1802861992 is an abundant number, since it is smaller than the sum of its proper divisors (1812978008).

1802861992 is a wasteful number, since it uses less digits than its factorization.

1802861992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 1802861992 is about 42460.1223738227. The cubic root of 1802861992 is about 1217.0847693294.

The spelling of 1802861992 in words is "one billion, eight hundred two million, eight hundred sixty-one thousand, nine hundred ninety-two".