1881057792 has 80 divisors (see below), whose sum is σ = 5021276832. Its totient is φ = 625766400.

The previous prime is 1881057767. The next prime is 1881057797. The reversal of 1881057792 is 2977501881.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1881057797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075863 + ... + 1077609.

Almost surely, 2^1881057792 is an apocalyptic number.

1881057792 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 1881057792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510638416).

1881057792 is an abundant number, since it is smaller than the sum of its proper divisors (3140219040).

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

1881057792 is an equidigital number, since it uses as much as digits as its factorization.

1881057792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469 (or 2453 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 1881057792 is about 43371.1631386570. The cubic root of 1881057792 is about 1234.4325917706.

The spelling of 1881057792 in words is "one billion, eight hundred eighty-one million, fifty-seven thousand, seven hundred ninety-two".