1699499900 has 144 divisors (see below), whose sum is σ = 4425383424. Its totient is φ = 553893120.

The previous prime is 1699499899. The next prime is 1699499909. The reversal of 1699499900 is 99949961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1699499909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4556114 + ... + 4556486.

Almost surely, 2^1699499900 is an apocalyptic number.

1699499900 is a gapful number since it is divisible by the number (10) 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 1699499900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212691712).

1699499900 is an abundant number, since it is smaller than the sum of its proper divisors (2725883524).

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

1699499900 is a wasteful number, since it uses less digits than its factorization.

1699499900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 56.

The square root of 1699499900 is about 41224.9912067911. The cubic root of 1699499900 is about 1193.3661488918.

The spelling of 1699499900 in words is "one billion, six hundred ninety-nine million, four hundred ninety-nine thousand, nine hundred".