2164994612 has 24 divisors (see below), whose sum is σ = 4146236640. Its totient is φ = 980977760.

The previous prime is 2164994609. The next prime is 2164994617.

2164994612 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164994617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63662 + ... + 91557.

It is an arithmetic number, because the mean of its divisors is an integer number (172759860).

Almost surely, 2^2164994612 is an apocalyptic number.

2164994612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2164994612 is a deficient number, since it is larger than the sum of its proper divisors (1981242028).

2164994612 is a wasteful number, since it uses less digits than its factorization.

2164994612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155551 (or 155549 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 2164994612 is about 46529.5025978142. The cubic root of 2164994612 is about 1293.6563956891.

The spelling of 2164994612 in words is "two billion, one hundred sixty-four million, nine hundred ninety-four thousand, six hundred twelve".