2164138 has 8 divisors (see below), whose sum is σ = 3417120. Its totient is φ = 1025100.

The previous prime is 2164121. The next prime is 2164171. The reversal of 2164138 is 8314612.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 28438 + ... + 28513.

It is an arithmetic number, because the mean of its divisors is an integer number (427140).

2^2164138 is an apocalyptic number.

2164138 is a deficient number, since it is larger than the sum of its proper divisors (1252982).

2164138 is a wasteful number, since it uses less digits than its factorization.

2164138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56972.

The product of its digits is 1152, while the sum is 25.

The square root of 2164138 is about 1471.1009482697. The cubic root of 2164138 is about 129.3485755114.

The spelling of 2164138 in words is "two million, one hundred sixty-four thousand, one hundred thirty-eight".