7958245682 has 4 divisors (see below), whose sum is σ = 11937368526. Its totient is φ = 3979122840.

The previous prime is 7958245639. The next prime is 7958245697. The reversal of 7958245682 is 2865428597.

It is a happy number.

It is a Cunningham number, because it is equal to 89209²+1.

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., 7958245681 + 1 = 89209^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989561419 + ... + 1989561422.

Almost surely, 2^7958245682 is an apocalyptic number.

7958245682 is a deficient number, since it is larger than the sum of its proper divisors (3979122844).

7958245682 is a wasteful number, since it uses less digits than its factorization.

7958245682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979122843.

The product of its digits is 9676800, while the sum is 56.

The square root of 7958245682 is about 89209.0000056048. Note that the first 5 decimals coincide. The cubic root of 7958245682 is about 1996.5144023334.

The spelling of 7958245682 in words is "seven billion, nine hundred fifty-eight million, two hundred forty-five thousand, six hundred eighty-two".