8167231493 has 2 divisors, whose sum is σ = 8167231494. Its totient is φ = 8167231492.

The previous prime is 8167231481. The next prime is 8167231507. The reversal of 8167231493 is 3941327618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8165291044 + 1940449 = 90362^2 + 1393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8167231493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8167231433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4083615746 + 4083615747.

It is an arithmetic number, because the mean of its divisors is an integer number (4083615747).

Almost surely, 2^8167231493 is an apocalyptic number.

It is an amenable number.

8167231493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8167231493 is an equidigital number, since it uses as much as digits as its factorization.

8167231493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 8167231493 is about 90372.7364474486. The cubic root of 8167231493 is about 2013.8399645267.

The spelling of 8167231493 in words is "eight billion, one hundred sixty-seven million, two hundred thirty-one thousand, four hundred ninety-three".