8130919 has 4 divisors (see below), whose sum is σ = 8252344. Its totient is φ = 8009496.

The previous prime is 8130911. The next prime is 8130931. The reversal of 8130919 is 9190318.

8130919 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8130919 - 2³ = 8130911 is a prime.

It is a super-2 number, since 2×8130919² = 132223687569122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

8130919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130911) 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, 60612 + ... + 60745.

It is an arithmetic number, because the mean of its divisors is an integer number (2063086).

Almost surely, 2^8130919 is an apocalyptic number.

8130919 is a deficient number, since it is larger than the sum of its proper divisors (121425).

8130919 is a wasteful number, since it uses less digits than its factorization.

8130919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121424.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 8130919 is about 2851.4766350086. The cubic root of 8130919 is about 201.0850938762.

The spelling of 8130919 in words is "eight million, one hundred thirty thousand, nine hundred nineteen".