2126317913 has 2 divisors, whose sum is σ = 2126317914. Its totient is φ = 2126317912.

The previous prime is 2126317877. The next prime is 2126317951. The reversal of 2126317913 is 3197136212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2126316544 + 1369 = 46112^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126317913 - 2⁸ = 2126317657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126314913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063158956 + 1063158957.

It is an arithmetic number, because the mean of its divisors is an integer number (1063158957).

Almost surely, 2^2126317913 is an apocalyptic number.

It is an amenable number.

2126317913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126317913 is an equidigital number, since it uses as much as digits as its factorization.

2126317913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 2126317913 is about 46112.0148442898. The cubic root of 2126317913 is about 1285.9065227895.

The spelling of 2126317913 in words is "two billion, one hundred twenty-six million, three hundred seventeen thousand, nine hundred thirteen".