2138147 has 4 divisors (see below), whose sum is σ = 2332536. Its totient is φ = 1943760.

The previous prime is 2138137. The next prime is 2138167. The reversal of 2138147 is 7418312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2138147 - 2¹⁰ = 2137123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138137) 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, 97178 + ... + 97199.

It is an arithmetic number, because the mean of its divisors is an integer number (583134).

2^2138147 is an apocalyptic number.

2138147 is a deficient number, since it is larger than the sum of its proper divisors (194389).

2138147 is a wasteful number, since it uses less digits than its factorization.

2138147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194388.

The product of its digits is 1344, while the sum is 26.

The square root of 2138147 is about 1462.2404043111. The cubic root of 2138147 is about 128.8286690487.

The spelling of 2138147 in words is "two million, one hundred thirty-eight thousand, one hundred forty-seven".