2149838 has 4 divisors (see below), whose sum is σ = 3224760. Its totient is φ = 1074918.

The previous prime is 2149813. The next prime is 2149853. The reversal of 2149838 is 8389412.

It is a happy number.

2149838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2149798 and 2149807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537458 + ... + 537461.

It is an arithmetic number, because the mean of its divisors is an integer number (806190).

2^2149838 is an apocalyptic number.

2149838 is a deficient number, since it is larger than the sum of its proper divisors (1074922).

2149838 is a wasteful number, since it uses less digits than its factorization.

2149838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074921.

The product of its digits is 13824, while the sum is 35.

The square root of 2149838 is about 1466.2325872794. The cubic root of 2149838 is about 129.0630463211.

The spelling of 2149838 in words is "two million, one hundred forty-nine thousand, eight hundred thirty-eight".