2164678612 has 48 divisors (see below), whose sum is σ = 4140400320. Its totient is φ = 986337792.

The previous prime is 2164678597. The next prime is 2164678613. The reversal of 2164678612 is 2168764612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164678613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264778 + ... + 272830.

It is an arithmetic number, because the mean of its divisors is an integer number (86258340).

Almost surely, 2^2164678612 is an apocalyptic number.

It is an amenable number.

2164678612 is a deficient number, since it is larger than the sum of its proper divisors (1975721708).

2164678612 is a wasteful number, since it uses less digits than its factorization.

2164678612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200 (or 8198 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 2164678612 is about 46526.1067788828. The cubic root of 2164678612 is about 1293.5934524514.

The spelling of 2164678612 in words is "two billion, one hundred sixty-four million, six hundred seventy-eight thousand, six hundred twelve".