8163122501 has 4 divisors (see below), whose sum is σ = 8165978604. Its totient is φ = 8160266400.

The previous prime is 8163122417. The next prime is 8163122503. The reversal of 8163122501 is 1052213618.

It is a Cunningham number, because it is equal to 90350²+1.

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 4563002500 + 3600120001 = 67550^2 + 60001^2 .

It is a cyclic number.

It is not a de Polignac number, because 8163122501 - 2¹⁴ = 8163106117 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 (8163122503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423760 + ... + 1429481.

It is an arithmetic number, because the mean of its divisors is an integer number (2041494651).

Almost surely, 2^8163122501 is an apocalyptic number.

It is an amenable number.

8163122501 is a deficient number, since it is larger than the sum of its proper divisors (2856103).

8163122501 is a wasteful number, since it uses less digits than its factorization.

8163122501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856102.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 8163122501 is about 90350.0000055340. Note that the first 5 decimals coincide. The cubic root of 8163122501 is about 2013.5021821578.

The spelling of 8163122501 in words is "eight billion, one hundred sixty-three million, one hundred twenty-two thousand, five hundred one".