8190881 has 4 divisors (see below), whose sum is σ = 8622000. Its totient is φ = 7759764.

The previous prime is 8190877. The next prime is 8190887. The reversal of 8190881 is 1880918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8190881 - 2² = 8190877 is a prime.

It is a super-2 number, since 2×8190881² = 134181063112322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8190887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215531 + ... + 215568.

It is an arithmetic number, because the mean of its divisors is an integer number (2155500).

Almost surely, 2^8190881 is an apocalyptic number.

It is an amenable number.

8190881 is a deficient number, since it is larger than the sum of its proper divisors (431119).

8190881 is a wasteful number, since it uses less digits than its factorization.

8190881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431118.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 8190881 is about 2861.9715232685. The cubic root of 8190881 is about 201.5781888435.

The spelling of 8190881 in words is "eight million, one hundred ninety thousand, eight hundred eighty-one".