7982249557 has 4 divisors (see below), whose sum is σ = 7984042560. Its totient is φ = 7980456556.

The previous prime is 7982249537. The next prime is 7982249579. The reversal of 7982249557 is 7559422897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7982249557 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7982249537) 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, 889807 + ... + 898732.

It is an arithmetic number, because the mean of its divisors is an integer number (1996010640).

Almost surely, 2^7982249557 is an apocalyptic number.

It is an amenable number.

7982249557 is a deficient number, since it is larger than the sum of its proper divisors (1793003).

7982249557 is a wasteful number, since it uses less digits than its factorization.

7982249557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793002.

The product of its digits is 12700800, while the sum is 58.

The square root of 7982249557 is about 89343.4360039953. The cubic root of 7982249557 is about 1998.5197010445.

The spelling of 7982249557 in words is "seven billion, nine hundred eighty-two million, two hundred forty-nine thousand, five hundred fifty-seven".