1699938318 has 64 divisors (see below), whose sum is σ = 3723148800. Its totient is φ = 514315392.

The previous prime is 1699938313. The next prime is 1699938329. The reversal of 1699938318 is 8138399961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1699938313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1242871 + ... + 1244237.

It is an arithmetic number, because the mean of its divisors is an integer number (58174200).

Almost surely, 2^1699938318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1699938318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861574400).

1699938318 is an abundant number, since it is smaller than the sum of its proper divisors (2023210482).

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

1699938318 is a wasteful number, since it uses less digits than its factorization.

1699938318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its digits is 2519424, while the sum is 57.

The square root of 1699938318 is about 41230.3082452703. The cubic root of 1699938318 is about 1193.4687571586.

The spelling of 1699938318 in words is "one billion, six hundred ninety-nine million, nine hundred thirty-eight thousand, three hundred eighteen".