1699855245 has 96 divisors (see below), whose sum is σ = 3447774720. Its totient is φ = 765573120.

The previous prime is 1699855207. The next prime is 1699855259. The reversal of 1699855245 is 5425589961.

It is not a de Polignac number, because 1699855245 - 2¹⁹ = 1699330957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1699855191 and 1699855200.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 663507 + ... + 666063.

It is an arithmetic number, because the mean of its divisors is an integer number (35914320).

Almost surely, 2^1699855245 is an apocalyptic number.

1699855245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1699855245 is an abundant number, since it is smaller than the sum of its proper divisors (1747919475).

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

1699855245 is a wasteful number, since it uses less digits than its factorization.

1699855245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675 (or 2672 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The square root of 1699855245 is about 41229.3008065866. The cubic root of 1699855245 is about 1193.4493159345.

The spelling of 1699855245 in words is "one billion, six hundred ninety-nine million, eight hundred fifty-five thousand, two hundred forty-five".