2145164 has 24 divisors (see below), whose sum is σ = 4478208. Its totient is φ = 879120.

The previous prime is 2145163. The next prime is 2145173. The reversal of 2145164 is 4615412.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (186592).

2^2145164 is an apocalyptic number.

It is an amenable number.

2145164 is an abundant number, since it is smaller than the sum of its proper divisors (2333044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145164 is a wasteful number, since it uses less digits than its factorization.

2145164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3363 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2145164 is about 1464.6378391944. The cubic root of 2145164 is about 128.9694457212.

The spelling of 2145164 in words is "two million, one hundred forty-five thousand, one hundred sixty-four".