2049818 has 4 divisors (see below), whose sum is σ = 3074730. Its totient is φ = 1024908.

The previous prime is 2049797. The next prime is 2049821. The reversal of 2049818 is 8189402.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1270129 + 779689 = 1127^2 + 883^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512453 + ... + 512456.

2^2049818 is an apocalyptic number.

2049818 is a deficient number, since it is larger than the sum of its proper divisors (1024912).

2049818 is a wasteful number, since it uses less digits than its factorization.

2049818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024911.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2049818 is about 1431.7185477600. The cubic root of 2049818 is about 127.0296498033.

The spelling of 2049818 in words is "two million, forty-nine thousand, eight hundred eighteen".