1881136992 has 96 divisors (see below), whose sum is σ = 5662185984. Its totient is φ = 535680000.

The previous prime is 1881136967. The next prime is 1881137021. The reversal of 1881136992 is 2996311881.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 204492 + ... + 213492.

It is an arithmetic number, because the mean of its divisors is an integer number (58981104).

Almost surely, 2^1881136992 is an apocalyptic number.

1881136992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881136992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2831092992).

1881136992 is an abundant number, since it is smaller than the sum of its proper divisors (3781048992).

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

1881136992 is a wasteful number, since it uses less digits than its factorization.

1881136992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332 (or 9324 counting only the distinct ones).

The product of its digits is 186624, while the sum is 48.

The square root of 1881136992 is about 43372.0761781126. The cubic root of 1881136992 is about 1234.4499163649.

The spelling of 1881136992 in words is "one billion, eight hundred eighty-one million, one hundred thirty-six thousand, nine hundred ninety-two".