4051858 has 4 divisors (see below), whose sum is σ = 6077790. Its totient is φ = 2025928.

The previous prime is 4051843. The next prime is 4051867. The reversal of 4051858 is 8581504.

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., 3229209 + 822649 = 1797^2 + 907^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012963 + ... + 1012966.

Almost surely, 2^4051858 is an apocalyptic number.

4051858 is a deficient number, since it is larger than the sum of its proper divisors (2025932).

4051858 is a wasteful number, since it uses less digits than its factorization.

4051858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025931.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 4051858 is about 2012.9227506290. The cubic root of 4051858 is about 159.4231572017.

The spelling of 4051858 in words is "four million, fifty-one thousand, eight hundred fifty-eight".