8130945 has 8 divisors (see below), whose sum is σ = 13009536. Its totient is φ = 4336496.

The previous prime is 8130943. The next prime is 8130949. The reversal of 8130945 is 5490318.

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 8130945 - 2¹ = 8130943 is a prime.

It is a super-2 number, since 2×8130945² = 132224533186050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8130943) 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, 271017 + ... + 271046.

It is an arithmetic number, because the mean of its divisors is an integer number (1626192).

Almost surely, 2^8130945 is an apocalyptic number.

It is an amenable number.

8130945 is a deficient number, since it is larger than the sum of its proper divisors (4878591).

8130945 is a wasteful number, since it uses less digits than its factorization.

8130945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542071.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 8130945 is about 2851.4811940464. The cubic root of 8130945 is about 201.0853082106.

The spelling of 8130945 in words is "eight million, one hundred thirty thousand, nine hundred forty-five".