2051930 has 16 divisors (see below), whose sum is σ = 3709800. Its totient is φ = 817152.

The previous prime is 2051923. The next prime is 2051947. The reversal of 2051930 is 391502.

2051930 = 408² + 409² + ... + 419².

It can be written as a sum of positive squares in 4 ways, for example, as 1968409 + 83521 = 1403^2 + 289^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4262 + ... + 4718.

2^2051930 is an apocalyptic number.

2051930 is a deficient number, since it is larger than the sum of its proper divisors (1657870).

2051930 is a wasteful number, since it uses less digits than its factorization.

2051930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 2051930 is about 1432.4559330046. The cubic root of 2051930 is about 127.0732625422.

The spelling of 2051930 in words is "two million, fifty-one thousand, nine hundred thirty".