8153973973 has 2 divisors, whose sum is σ = 8153973974. Its totient is φ = 8153973972.

The previous prime is 8153973953. The next prime is 8153973977. The reversal of 8153973973 is 3793793518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4986760689 + 3167213284 = 70617^2 + 56278^2 .

It is a cyclic number.

It is not a de Polignac number, because 8153973973 - 2⁵ = 8153973941 is a prime.

It is a super-2 number, since 2×8153973973² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8153973977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4076986986 + 4076986987.

It is an arithmetic number, because the mean of its divisors is an integer number (4076986987).

Almost surely, 2^8153973973 is an apocalyptic number.

It is an amenable number.

8153973973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8153973973 is an equidigital number, since it uses as much as digits as its factorization.

8153973973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 55.

The square root of 8153973973 is about 90299.3575447799. The cubic root of 8153973973 is about 2012.7497141008.

The spelling of 8153973973 in words is "eight billion, one hundred fifty-three million, nine hundred seventy-three thousand, nine hundred seventy-three".