813930105 has 8 divisors (see below), whose sum is σ = 1302288192. Its totient is φ = 434096048.

The previous prime is 813930083. The next prime is 813930109. The reversal of 813930105 is 501039318.

It is a happy number.

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 813930105 - 2²¹ = 811832953 is a prime.

It is a super-2 number, since 2×813930105² = 1324964431650622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813930109) 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, 27130989 + ... + 27131018.

It is an arithmetic number, because the mean of its divisors is an integer number (162786024).

Almost surely, 2^813930105 is an apocalyptic number.

It is an amenable number.

813930105 is a deficient number, since it is larger than the sum of its proper divisors (488358087).

813930105 is a wasteful number, since it uses less digits than its factorization.

813930105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54262015.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 813930105 is about 28529.4602998374. The cubic root of 813930105 is about 933.6749434750.

The spelling of 813930105 in words is "eight hundred thirteen million, nine hundred thirty thousand, one hundred five".