318246989 has 4 divisors (see below), whose sum is σ = 318401856. Its totient is φ = 318092124.

The previous prime is 318246959. The next prime is 318246991. The reversal of 318246989 is 989642813.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 318246989 - 2¹² = 318242893 is a prime.

It is a super-2 number, since 2×318246989² = 202562292015132242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318246949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74309 + ... + 78474.

It is an arithmetic number, because the mean of its divisors is an integer number (79600464).

Almost surely, 2^318246989 is an apocalyptic number.

It is an amenable number.

318246989 is a deficient number, since it is larger than the sum of its proper divisors (154867).

318246989 is a wasteful number, since it uses less digits than its factorization.

318246989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154866.

The product of its digits is 746496, while the sum is 50.

The square root of 318246989 is about 17839.4783836299. The cubic root of 318246989 is about 682.7390881901.

The spelling of 318246989 in words is "three hundred eighteen million, two hundred forty-six thousand, nine hundred eighty-nine".