2051918 has 24 divisors (see below), whose sum is σ = 3463320. Its totient is φ = 910800.

The previous prime is 2051893. The next prime is 2051923. The reversal of 2051918 is 8191502.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14693 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (144305).

2^2051918 is an apocalyptic number.

2051918 is a deficient number, since it is larger than the sum of its proper divisors (1411402).

2051918 is a wasteful number, since it uses less digits than its factorization.

2051918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2051918 is about 1432.4517443879. The cubic root of 2051918 is about 127.0730148271.

The spelling of 2051918 in words is "two million, fifty-one thousand, nine hundred eighteen".