2138151 has 4 divisors (see below), whose sum is σ = 2850872. Its totient is φ = 1425432.

The previous prime is 2138137. The next prime is 2138167. The reversal of 2138151 is 1518312.

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

It is not a de Polignac number, because 2138151 - 2¹⁴ = 2121767 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356356 + ... + 356361.

It is an arithmetic number, because the mean of its divisors is an integer number (712718).

2^2138151 is an apocalyptic number.

2138151 is a deficient number, since it is larger than the sum of its proper divisors (712721).

2138151 is an equidigital number, since it uses as much as digits as its factorization.

2138151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712720.

The product of its digits is 240, while the sum is 21.

The square root of 2138151 is about 1462.2417720746. The cubic root of 2138151 is about 128.8287493853.

The spelling of 2138151 in words is "two million, one hundred thirty-eight thousand, one hundred fifty-one".