8179963973 has 4 divisors (see below), whose sum is σ = 8292018348. Its totient is φ = 8067909600.

The previous prime is 8179963931. The next prime is 8179963991. The reversal of 8179963973 is 3793699718.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6276125284 + 1903838689 = 79222^2 + 43633^2 .

It is a cyclic number.

It is not a de Polignac number, because 8179963973 - 2¹² = 8179959877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8179963993) 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, 56027078 + ... + 56027223.

It is an arithmetic number, because the mean of its divisors is an integer number (2073004587).

Almost surely, 2^8179963973 is an apocalyptic number.

It is an amenable number.

8179963973 is a deficient number, since it is larger than the sum of its proper divisors (112054375).

8179963973 is a wasteful number, since it uses less digits than its factorization.

8179963973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112054374.

The product of its digits is 15431472, while the sum is 62.

The square root of 8179963973 is about 90443.1532676742. The cubic root of 8179963973 is about 2014.8859274499.

The spelling of 8179963973 in words is "eight billion, one hundred seventy-nine million, nine hundred sixty-three thousand, nine hundred seventy-three".