2164348178 has 16 divisors (see below), whose sum is σ = 3418800000. Its totient is φ = 1024795152.

The previous prime is 2164348169. The next prime is 2164348181. The reversal of 2164348178 is 8718434612.

It is a super-2 number, since 2×2164348178² = 9368806071223839368, which contains 22 as substring.

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, 94103 + ... + 114821.

It is an arithmetic number, because the mean of its divisors is an integer number (213675000).

Almost surely, 2^2164348178 is an apocalyptic number.

2164348178 is a deficient number, since it is larger than the sum of its proper divisors (1254451822).

2164348178 is a wasteful number, since it uses less digits than its factorization.

2164348178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23489.

The product of its digits is 258048, while the sum is 44.

The square root of 2164348178 is about 46522.5555832867. Note that the first 4 decimals coincide. The cubic root of 2164348178 is about 1293.5276275898.

The spelling of 2164348178 in words is "two billion, one hundred sixty-four million, three hundred forty-eight thousand, one hundred seventy-eight".