2051838 has 16 divisors (see below), whose sum is σ = 4559760. Its totient is φ = 683928.

The previous prime is 2051821. The next prime is 2051839. The reversal of 2051838 is 8381502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051839) 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, 18945 + ... + 19052.

It is an arithmetic number, because the mean of its divisors is an integer number (284985).

2^2051838 is an apocalyptic number.

2051838 is an abundant number, since it is smaller than the sum of its proper divisors (2507922).

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

2051838 is a wasteful number, since it uses less digits than its factorization.

2051838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38008 (or 38002 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2051838 is about 1432.4238199639. The cubic root of 2051838 is about 127.0713633684.

The spelling of 2051838 in words is "two million, fifty-one thousand, eight hundred thirty-eight".