881816990 has 16 divisors (see below), whose sum is σ = 1602682848. Its totient is φ = 349301856.

The previous prime is 881816951. The next prime is 881816993. The reversal of 881816990 is 99618188.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881816993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427037 + ... + 429096.

It is an arithmetic number, because the mean of its divisors is an integer number (100167678).

Almost surely, 2^881816990 is an apocalyptic number.

881816990 is a deficient number, since it is larger than the sum of its proper divisors (720865858).

881816990 is a wasteful number, since it uses less digits than its factorization.

881816990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856243.

The product of its (nonzero) digits is 248832, while the sum is 50.

The square root of 881816990 is about 29695.4035163693. The cubic root of 881816990 is about 958.9430605731.

The spelling of 881816990 in words is "eight hundred eighty-one million, eight hundred sixteen thousand, nine hundred ninety".