8274378613 has 4 divisors (see below), whose sum is σ = 8283708000. Its totient is φ = 8265049228.

The previous prime is 8274378599. The next prime is 8274378649. The reversal of 8274378613 is 3168734728.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8274378613 - 2²⁵ = 8240824181 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 (8274376613) 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, 4663363 + ... + 4665136.

It is an arithmetic number, because the mean of its divisors is an integer number (2070927000).

Almost surely, 2^8274378613 is an apocalyptic number.

It is an amenable number.

8274378613 is a deficient number, since it is larger than the sum of its proper divisors (9329387).

8274378613 is an equidigital number, since it uses as much as digits as its factorization.

8274378613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9329386.

The product of its digits is 1354752, while the sum is 49.

The square root of 8274378613 is about 90963.6114773375. The cubic root of 8274378613 is about 2022.6083526144.

The spelling of 8274378613 in words is "eight billion, two hundred seventy-four million, three hundred seventy-eight thousand, six hundred thirteen".