210926390413 has 2 divisors, whose sum is σ = 210926390414. Its totient is φ = 210926390412.

The previous prime is 210926390383. The next prime is 210926390447. The reversal of 210926390413 is 314093629012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205102105924 + 5824284489 = 452882^2 + 76317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210926390413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210926396413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105463195206 + 105463195207.

It is an arithmetic number, because the mean of its divisors is an integer number (105463195207).

Almost surely, 2^210926390413 is an apocalyptic number.

It is an amenable number.

210926390413 is a deficient number, since it is larger than the sum of its proper divisors (1).

210926390413 is an equidigital number, since it uses as much as digits as its factorization.

210926390413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 210926390413 in words is "two hundred ten billion, nine hundred twenty-six million, three hundred ninety thousand, four hundred thirteen".