881495820 has 36 divisors (see below), whose sum is σ = 2673871200. Its totient is φ = 235065504.

The previous prime is 881495809. The next prime is 881495827. The reversal of 881495820 is 28594188.

It is a happy number.

881495820 is a `hidden beast` number, since 8 + 81 + 495 + 82 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (881495827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2448420 + ... + 2448779.

It is an arithmetic number, because the mean of its divisors is an integer number (74274200).

Almost surely, 2^881495820 is an apocalyptic number.

It is an amenable number.

881495820 is an abundant number, since it is smaller than the sum of its proper divisors (1792375380).

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

881495820 is a wasteful number, since it uses less digits than its factorization.

881495820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897214 (or 4897209 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 881495820 is about 29689.9952846072. The cubic root of 881495820 is about 958.8266263074.

The spelling of 881495820 in words is "eight hundred eighty-one million, four hundred ninety-five thousand, eight hundred twenty".