318416749 has 12 divisors (see below), whose sum is σ = 392192604. Its totient is φ = 256873344.

The previous prime is 318416743. The next prime is 318416773. The reversal of 318416749 is 947614813.

It can be written as a sum of positive squares in 2 ways, for example, as 244766025 + 73650724 = 15645^2 + 8582^2 .

It is not a de Polignac number, because 318416749 - 2⁷ = 318416621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318416743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190294 + ... + 191959.

It is an arithmetic number, because the mean of its divisors is an integer number (32682717).

Almost surely, 2^318416749 is an apocalyptic number.

It is an amenable number.

318416749 is a deficient number, since it is larger than the sum of its proper divisors (73775855).

318416749 is a wasteful number, since it uses less digits than its factorization.

318416749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382284 (or 382277 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 318416749 is about 17844.2357359457. The cubic root of 318416749 is about 682.8604626671.

The spelling of 318416749 in words is "three hundred eighteen million, four hundred sixteen thousand, seven hundred forty-nine".