7924178313 has 12 divisors (see below), whose sum is σ = 11640036720. Its totient is φ = 5193246456.

The previous prime is 7924178309. The next prime is 7924178321. The reversal of 7924178313 is 3138714297.

It is not a de Polignac number, because 7924178313 - 2² = 7924178309 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7924168313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7461031 + ... + 7462092.

It is an arithmetic number, because the mean of its divisors is an integer number (970003060).

Almost surely, 2^7924178313 is an apocalyptic number.

It is an amenable number.

7924178313 is a deficient number, since it is larger than the sum of its proper divisors (3715858407).

7924178313 is a wasteful number, since it uses less digits than its factorization.

7924178313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14923188 (or 14923185 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 7924178313 is about 89017.8539002149. The cubic root of 7924178313 is about 1993.6614587528.

The spelling of 7924178313 in words is "seven billion, nine hundred twenty-four million, one hundred seventy-eight thousand, three hundred thirteen".