1881533633790 has 32 divisors (see below), whose sum is σ = 4515723020160. Its totient is φ = 501737602464.

The previous prime is 1881533633737. The next prime is 1881533633803. The reversal of 1881533633790 is 973363351881.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1881533633790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3983181 + ... + 4430439.

It is an arithmetic number, because the mean of its divisors is an integer number (141116344380).

Almost surely, 2^{1881533633790} is an apocalyptic number.

1881533633790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1881533633790 is an abundant number, since it is smaller than the sum of its proper divisors (2634189386370).

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

1881533633790 is a wasteful number, since it uses less digits than its factorization.

1881533633790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587496.

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 1881533633790 in words is "one trillion, eight hundred eighty-one billion, five hundred thirty-three million, six hundred thirty-three thousand, seven hundred ninety".