7957238813 has 8 divisors (see below), whose sum is σ = 8215900416. Its totient is φ = 7698700800.

The previous prime is 7957238797. The next prime is 7957238837. The reversal of 7957238813 is 3188327597.

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 7957238813 - 2⁴ = 7957238797 is a prime.

It is a super-2 number, since 2×7957238813² (a number of 21 digits) 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 (7957238873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110270 + ... + 167552.

It is an arithmetic number, because the mean of its divisors is an integer number (1026987552).

Almost surely, 2^7957238813 is an apocalyptic number.

It is an amenable number.

7957238813 is a deficient number, since it is larger than the sum of its proper divisors (258661603).

7957238813 is a wasteful number, since it uses less digits than its factorization.

7957238813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61795.

The product of its digits is 2540160, while the sum is 53.

The square root of 7957238813 is about 89203.3565119609. The cubic root of 7957238813 is about 1996.4301998043.

The spelling of 7957238813 in words is "seven billion, nine hundred fifty-seven million, two hundred thirty-eight thousand, eight hundred thirteen".