881009091 has 6 divisors (see below), whose sum is σ = 1272568700. Its totient is φ = 587339388.

The previous prime is 881009053. The next prime is 881009113. The reversal of 881009091 is 190900188.

It is not a de Polignac number, because 881009091 - 2⁷ = 881008963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881009021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48944941 + ... + 48944958.

Almost surely, 2^881009091 is an apocalyptic number.

881009091 is a deficient number, since it is larger than the sum of its proper divisors (391559609).

881009091 is a wasteful number, since it uses less digits than its factorization.

881009091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97889905 (or 97889902 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 881009091 is about 29681.7973007027. The cubic root of 881009091 is about 958.6501177573.

The spelling of 881009091 in words is "eight hundred eighty-one million, nine thousand, ninety-one".