7926163393 has 4 divisors (see below), whose sum is σ = 7943357268. Its totient is φ = 7908969520.

The previous prime is 7926163387. The next prime is 7926163397. The reversal of 7926163393 is 3933616297.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5893325824 + 2032837569 = 76768^2 + 45087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7926163393 is a prime.

It is a super-2 number, since 2×7926163393² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7926163397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8596246 + ... + 8597167.

It is an arithmetic number, because the mean of its divisors is an integer number (1985839317).

Almost surely, 2^7926163393 is an apocalyptic number.

It is an amenable number.

7926163393 is a deficient number, since it is larger than the sum of its proper divisors (17193875).

7926163393 is a wasteful number, since it uses less digits than its factorization.

7926163393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17193874.

The product of its digits is 1102248, while the sum is 49.

The square root of 7926163393 is about 89029.0031001134. The cubic root of 7926163393 is about 1993.8279217352.

The spelling of 7926163393 in words is "seven billion, nine hundred twenty-six million, one hundred sixty-three thousand, three hundred ninety-three".