2168690244 has 48 divisors (see below), whose sum is σ = 5924236416. Its totient is φ = 604512000.

The previous prime is 2168690233. The next prime is 2168690257. The reversal of 2168690244 is 4420968612.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2168690196 and 2168690205.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 311407 + ... + 318294.

It is an arithmetic number, because the mean of its divisors is an integer number (123421592).

Almost surely, 2^2168690244 is an apocalyptic number.

It is an amenable number.

2168690244 is an abundant number, since it is smaller than the sum of its proper divisors (3755546172).

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

2168690244 is a wasteful number, since it uses less digits than its factorization.

2168690244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629756 (or 629754 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 2168690244 is about 46569.1984470422. The cubic root of 2168690244 is about 1294.3920649935.

The spelling of 2168690244 in words is "two billion, one hundred sixty-eight million, six hundred ninety thousand, two hundred forty-four".