2168402385 has 8 divisors (see below), whose sum is σ = 3469443840. Its totient is φ = 1156481264.

The previous prime is 2168402371. The next prime is 2168402393. The reversal of 2168402385 is 5832048612.

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

It is a cyclic number.

It is not a de Polignac number, because 2168402385 - 2⁶ = 2168402321 is a prime.

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, 72280065 + ... + 72280094.

It is an arithmetic number, because the mean of its divisors is an integer number (433680480).

Almost surely, 2^2168402385 is an apocalyptic number.

It is an amenable number.

2168402385 is a deficient number, since it is larger than the sum of its proper divisors (1301041455).

2168402385 is a wasteful number, since it uses less digits than its factorization.

2168402385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144560167.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 2168402385 is about 46566.1076857407. The cubic root of 2168402385 is about 1294.3347925002.

The spelling of 2168402385 in words is "two billion, one hundred sixty-eight million, four hundred two thousand, three hundred eighty-five".