609123913 has 2 divisors, whose sum is σ = 609123914. Its totient is φ = 609123912.

The previous prime is 609123871. The next prime is 609123941. The reversal of 609123913 is 319321906.

609123913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402684489 + 206439424 = 20067^2 + 14368^2 .

It is a cyclic number.

It is not a de Polignac number, because 609123913 - 2²⁵ = 575569481 is a prime.

It is not a weakly prime, because it can be changed into another prime (609123943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304561956 + 304561957.

It is an arithmetic number, because the mean of its divisors is an integer number (304561957).

Almost surely, 2^609123913 is an apocalyptic number.

It is an amenable number.

609123913 is a deficient number, since it is larger than the sum of its proper divisors (1).

609123913 is an equidigital number, since it uses as much as digits as its factorization.

609123913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 609123913 is about 24680.4358348875. The cubic root of 609123913 is about 847.6864018019.

The spelling of 609123913 in words is "six hundred nine million, one hundred twenty-three thousand, nine hundred thirteen".