1699938816 has 160 divisors (see below), whose sum is σ = 4923494400. Its totient is φ = 519229440.

The previous prime is 1699938781. The next prime is 1699938829. The reversal of 1699938816 is 6188399961.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1699938816.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903765 + ... + 905643.

It is an arithmetic number, because the mean of its divisors is an integer number (30771840).

Almost surely, 2^1699938816 is an apocalyptic number.

1699938816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1699938816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2461747200).

1699938816 is an abundant number, since it is smaller than the sum of its proper divisors (3223555584).

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

1699938816 is a wasteful number, since it uses less digits than its factorization.

1699938816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1934 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 60.

The square root of 1699938816 is about 41230.3142845164. The cubic root of 1699938816 is about 1193.4688737015.

The spelling of 1699938816 in words is "one billion, six hundred ninety-nine million, nine hundred thirty-eight thousand, eight hundred sixteen".