7961719802 has 4 divisors (see below), whose sum is σ = 11942579706. Its totient is φ = 3980859900.

The previous prime is 7961719793. The next prime is 7961719807. The reversal of 7961719802 is 2089171697.

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

It can be written as a sum of positive squares in only one way, i.e., 7677089161 + 284630641 = 87619^2 + 16871^2 .

It is not an unprimeable number, because it can be changed into a prime (7961719807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990429949 + ... + 1990429952.

Almost surely, 2^7961719802 is an apocalyptic number.

7961719802 is a deficient number, since it is larger than the sum of its proper divisors (3980859904).

7961719802 is a wasteful number, since it uses less digits than its factorization.

7961719802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3980859903.

The product of its (nonzero) digits is 381024, while the sum is 50.

The square root of 7961719802 is about 89228.4696831678. The cubic root of 7961719802 is about 1996.8048818281.

The spelling of 7961719802 in words is "seven billion, nine hundred sixty-one million, seven hundred nineteen thousand, eight hundred two".