2139018 has 16 divisors (see below), whose sum is σ = 4889280. Its totient is φ = 611136.

The previous prime is 2139013. The next prime is 2139043. The reversal of 2139018 is 8109312.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2139013) 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, 25423 + ... + 25506.

It is an arithmetic number, because the mean of its divisors is an integer number (305580).

2^2139018 is an apocalyptic number.

2139018 is an abundant number, since it is smaller than the sum of its proper divisors (2750262).

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

2139018 is a wasteful number, since it uses less digits than its factorization.

2139018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50941.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2139018 is about 1462.5382046292. The cubic root of 2139018 is about 128.8461599785.

The spelling of 2139018 in words is "two million, one hundred thirty-nine thousand, eighteen".