673418293 has 2 divisors, whose sum is σ = 673418294. Its totient is φ = 673418292.

The previous prime is 673418287. The next prime is 673418321. The reversal of 673418293 is 392814376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436935409 + 236482884 = 20903^2 + 15378^2 .

It is a cyclic number.

It is not a de Polignac number, because 673418293 - 2²¹ = 671321141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673488293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336709146 + 336709147.

It is an arithmetic number, because the mean of its divisors is an integer number (336709147).

Almost surely, 2^673418293 is an apocalyptic number.

It is an amenable number.

673418293 is a deficient number, since it is larger than the sum of its proper divisors (1).

673418293 is an equidigital number, since it uses as much as digits as its factorization.

673418293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 673418293 is about 25950.3042949404. The cubic root of 673418293 is about 876.5196093856.

The spelling of 673418293 in words is "six hundred seventy-three million, four hundred eighteen thousand, two hundred ninety-three".