1699881216 has 144 divisors (see below), whose sum is σ = 4958972928. Its totient is φ = 512665600.

The previous prime is 1699881193. The next prime is 1699881247. The reversal of 1699881216 is 6121889961.

It is a super-2 number, since 2×1699881216² = 5779192297019277312, which contains 22 as substring.

It is a nialpdrome in base 16.

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, 2627005 + ... + 2627651.

It is an arithmetic number, because the mean of its divisors is an integer number (34437312).

Almost surely, 2^1699881216 is an apocalyptic number.

1699881216 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 1699881216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479486464).

1699881216 is an abundant number, since it is smaller than the sum of its proper divisors (3259091712).

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

1699881216 is a wasteful number, since it uses less digits than its factorization.

1699881216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 974 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 1699881216 is about 41229.6157634291. The cubic root of 1699881216 is about 1193.4553938863.

The spelling of 1699881216 in words is "one billion, six hundred ninety-nine million, eight hundred eighty-one thousand, two hundred sixteen".