318450690 has 160 divisors (see below), whose sum is σ = 901587456. Its totient is φ = 80559360.

The previous prime is 318450679. The next prime is 318450703. The reversal of 318450690 is 96054813.

It is a super-2 number, since 2×318450690² = 202821683922952200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1427919 + ... + 1428141.

Almost surely, 2^318450690 is an apocalyptic number.

318450690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 318450690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450793728).

318450690 is an abundant number, since it is smaller than the sum of its proper divisors (583136766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318450690 is a wasteful number, since it uses less digits than its factorization.

318450690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 318450690 is about 17845.1867460108. The cubic root of 318450690 is about 682.8847245226.

The spelling of 318450690 in words is "three hundred eighteen million, four hundred fifty thousand, six hundred ninety".