8130749 has 8 divisors (see below), whose sum is σ = 8890560. Its totient is φ = 7374400.

The previous prime is 8130737. The next prime is 8130757. The reversal of 8130749 is 9470318.

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

It is not a de Polignac number, because 8130749 - 2¹² = 8126653 is a prime.

It is a super-2 number, since 2×8130749² = 132218158602002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130769) 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, 8789 + ... + 9669.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^8130749 is an apocalyptic number.

It is an amenable number.

8130749 is a deficient number, since it is larger than the sum of its proper divisors (759811).

8130749 is a wasteful number, since it uses less digits than its factorization.

8130749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 8130749 is about 2851.4468257360. The cubic root of 8130749 is about 201.0836924478.

The spelling of 8130749 in words is "eight million, one hundred thirty thousand, seven hundred forty-nine".