7930742691 has 4 divisors (see below), whose sum is σ = 10574323592. Its totient is φ = 5287161792.

The previous prime is 7930742593. The next prime is 7930742693. The reversal of 7930742691 is 1962470397.

It is a happy number.

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

It is not a de Polignac number, because 7930742691 - 2³¹ = 5783259043 is a prime.

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 7930742691.

It is not an unprimeable number, because it can be changed into a prime (7930742693) 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, 1321790446 + ... + 1321790451.

It is an arithmetic number, because the mean of its divisors is an integer number (2643580898).

Almost surely, 2^7930742691 is an apocalyptic number.

7930742691 is a deficient number, since it is larger than the sum of its proper divisors (2643580901).

7930742691 is a wasteful number, since it uses less digits than its factorization.

7930742691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643580900.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 7930742691 is about 89054.7173989116. The cubic root of 7930742691 is about 1994.2118222426.

The spelling of 7930742691 in words is "seven billion, nine hundred thirty million, seven hundred forty-two thousand, six hundred ninety-one".