2168890258 has 8 divisors (see below), whose sum is σ = 3306668940. Its totient is φ = 1066667280.

The previous prime is 2168890249. The next prime is 2168890259. The reversal of 2168890258 is 8520988612.

It can be written as a sum of positive squares in 2 ways, for example, as 2134162809 + 34727449 = 46197^2 + 5893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2168890259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8888773 + ... + 8889016.

Almost surely, 2^2168890258 is an apocalyptic number.

2168890258 is a deficient number, since it is larger than the sum of its proper divisors (1137778682).

2168890258 is a wasteful number, since it uses less digits than its factorization.

2168890258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17777852.

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 2168890258 is about 46571.3458899354. The cubic root of 2168890258 is about 1294.4318568412.

The spelling of 2168890258 in words is "two billion, one hundred sixty-eight million, eight hundred ninety thousand, two hundred fifty-eight".