7798126631 has 8 divisors (see below), whose sum is σ = 7818600960. Its totient is φ = 7777676088.

The previous prime is 7798126619. The next prime is 7798126649. The reversal of 7798126631 is 1366218977.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7798126631 is a prime.

It is a super-2 number, since 2×7798126631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7798126631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798126681) 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, 782180 + ... + 792086.

It is an arithmetic number, because the mean of its divisors is an integer number (977325120).

Almost surely, 2^7798126631 is an apocalyptic number.

7798126631 is a deficient number, since it is larger than the sum of its proper divisors (20474329).

7798126631 is a wasteful number, since it uses less digits than its factorization.

7798126631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11893.

The product of its digits is 762048, while the sum is 50.

The square root of 7798126631 is about 88307.0021629089. The cubic root of 7798126631 is about 1983.0336985442.

The spelling of 7798126631 in words is "seven billion, seven hundred ninety-eight million, one hundred twenty-six thousand, six hundred thirty-one".