1881783996 has 24 divisors (see below), whose sum is σ = 4465251840. Its totient is φ = 616629552.

The previous prime is 1881783989. The next prime is 1881784001. The reversal of 1881783996 is 6993871881.

It is a super-2 number, since 2×1881783996² = 7082222015203456032, which contains 22 as substring.

It is a congruent number.

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, 1328236 + ... + 1329651.

It is an arithmetic number, because the mean of its divisors is an integer number (186052160).

Almost surely, 2^1881783996 is an apocalyptic number.

It is an amenable number.

1881783996 is an abundant number, since it is smaller than the sum of its proper divisors (2583467844).

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

1881783996 is a wasteful number, since it uses less digits than its factorization.

1881783996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657953 (or 2657951 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 60.

The square root of 1881783996 is about 43379.5342990217. The cubic root of 1881783996 is about 1234.5914269666.

The spelling of 1881783996 in words is "one billion, eight hundred eighty-one million, seven hundred eighty-three thousand, nine hundred ninety-six".