2118164 has 12 divisors (see below), whose sum is σ = 3767988. Its totient is φ = 1041600.

The previous prime is 2118163. The next prime is 2118169. The reversal of 2118164 is 4618112.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 1322500 = 892^2 + 1150^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4097 + ... + 4584.

It is an arithmetic number, because the mean of its divisors is an integer number (313999).

2^2118164 is an apocalyptic number.

It is an amenable number.

2118164 is a deficient number, since it is larger than the sum of its proper divisors (1649824).

2118164 is a wasteful number, since it uses less digits than its factorization.

2118164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746 (or 8744 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 2118164 is about 1455.3913563025. The cubic root of 2118164 is about 128.4260704108.

It can be divided in two parts, 2 and 118164, that multiplied together give a triangular number (236328 = T₆₈₇).

The spelling of 2118164 in words is "two million, one hundred eighteen thousand, one hundred sixty-four".