319066818 has 64 divisors (see below), whose sum is σ = 756449280. Its totient is φ = 87796800.

The previous prime is 319066801. The next prime is 319066819. The reversal of 319066818 is 818660913.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 319066818.

It is not an unprimeable number, because it can be changed into a prime (319066819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349783 + ... + 350693.

It is an arithmetic number, because the mean of its divisors is an integer number (11819520).

Almost surely, 2^319066818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 319066818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378224640).

319066818 is an abundant number, since it is smaller than the sum of its proper divisors (437382462).

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

319066818 is a wasteful number, since it uses less digits than its factorization.

319066818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 319066818 is about 17862.4415464404. The cubic root of 319066818 is about 683.3248484901.

The spelling of 319066818 in words is "three hundred nineteen million, sixty-six thousand, eight hundred eighteen".