2164722716 has 12 divisors (see below), whose sum is σ = 4079669832. Its totient is φ = 999102768.

The previous prime is 2164722689. The next prime is 2164722733. The reversal of 2164722716 is 6172274612.

It is a self number, because there is not a number n which added to its sum of digits gives 2164722716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20814590 + ... + 20814693.

It is an arithmetic number, because the mean of its divisors is an integer number (339972486).

Almost surely, 2^2164722716 is an apocalyptic number.

2164722716 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2164722716 is a deficient number, since it is larger than the sum of its proper divisors (1914947116).

2164722716 is a wasteful number, since it uses less digits than its factorization.

2164722716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41629300 (or 41629298 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 2164722716 is about 46526.5807469236. The cubic root of 2164722716 is about 1293.6022377830.

The spelling of 2164722716 in words is "two billion, one hundred sixty-four million, seven hundred twenty-two thousand, seven hundred sixteen".