673837915913 has 2 divisors, whose sum is σ = 673837915914. Its totient is φ = 673837915912.

The previous prime is 673837915843. The next prime is 673837915969. The reversal of 673837915913 is 319519738376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447021948409 + 226815967504 = 668597^2 + 476252^2 .

It is a cyclic number.

It is not a de Polignac number, because 673837915913 - 2¹⁰ = 673837914889 is a prime.

It is not a weakly prime, because it can be changed into another prime (673837915613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336918957956 + 336918957957.

It is an arithmetic number, because the mean of its divisors is an integer number (336918957957).

Almost surely, 2^673837915913 is an apocalyptic number.

It is an amenable number.

673837915913 is a deficient number, since it is larger than the sum of its proper divisors (1).

673837915913 is an equidigital number, since it uses as much as digits as its factorization.

673837915913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25719120, while the sum is 62.

The spelling of 673837915913 in words is "six hundred seventy-three billion, eight hundred thirty-seven million, nine hundred fifteen thousand, nine hundred thirteen".