318366749 has 2 divisors, whose sum is σ = 318366750. Its totient is φ = 318366748.

The previous prime is 318366733. The next prime is 318366779. The reversal of 318366749 is 947663813.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279491524 + 38875225 = 16718^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 318366749 - 2⁴ = 318366733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318366709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159183374 + 159183375.

It is an arithmetic number, because the mean of its divisors is an integer number (159183375).

Almost surely, 2^318366749 is an apocalyptic number.

It is an amenable number.

318366749 is a deficient number, since it is larger than the sum of its proper divisors (1).

318366749 is an equidigital number, since it uses as much as digits as its factorization.

318366749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 318366749 is about 17842.8346682919. The cubic root of 318366749 is about 682.8247183053.

The spelling of 318366749 in words is "three hundred eighteen million, three hundred sixty-six thousand, seven hundred forty-nine".