8113193021 has 8 divisors (see below), whose sum is σ = 8543428320. Its totient is φ = 7683280272.

The previous prime is 8113193003. The next prime is 8113193057. The reversal of 8113193021 is 1203913118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8113193021 - 2²² = 8108998717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8113193071) 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, 28115 + ... + 130448.

It is an arithmetic number, because the mean of its divisors is an integer number (1067928540).

Almost surely, 2^8113193021 is an apocalyptic number.

It is an amenable number.

8113193021 is a deficient number, since it is larger than the sum of its proper divisors (430235299).

8113193021 is a wasteful number, since it uses less digits than its factorization.

8113193021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161275.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 8113193021 is about 90073.2647404323. The cubic root of 8113193021 is about 2009.3886097891.

The spelling of 8113193021 in words is "eight billion, one hundred thirteen million, one hundred ninety-three thousand, twenty-one".