2168089730 has 16 divisors (see below), whose sum is σ = 4132124280. Its totient is φ = 816221952.

The previous prime is 2168089727. The next prime is 2168089757. The reversal of 2168089730 is 379808612.

It can be written as a sum of positive squares in 4 ways, for example, as 1640331001 + 527758729 = 40501^2 + 22973^2 .

It is a super-2 number, since 2×2168089730² = 9401226154662945800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6376565 + ... + 6376904.

Almost surely, 2^2168089730 is an apocalyptic number.

2168089730 is a deficient number, since it is larger than the sum of its proper divisors (1964034550).

2168089730 is a wasteful number, since it uses less digits than its factorization.

2168089730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753493.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2168089730 is about 46562.7504557022. The cubic root of 2168089730 is about 1294.2725808463.

The spelling of 2168089730 in words is "two billion, one hundred sixty-eight million, eighty-nine thousand, seven hundred thirty".