4261018 has 4 divisors (see below), whose sum is σ = 6391530. Its totient is φ = 2130508.

The previous prime is 4261013. The next prime is 4261021. The reversal of 4261018 is 8101624.

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., 4052169 + 208849 = 2013^2 + 457^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 4261018.

It is not an unprimeable number, because it can be changed into a prime (4261013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065253 + ... + 1065256.

Almost surely, 2^4261018 is an apocalyptic number.

4261018 is a deficient number, since it is larger than the sum of its proper divisors (2130512).

4261018 is a wasteful number, since it uses less digits than its factorization.

4261018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130511.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 4261018 is about 2064.2233406296. The cubic root of 4261018 is about 162.1204459146.

Subtracting 4261018 from its reverse (8101624), we obtain a triangular number (3840606 = T₂₇₇₁).

It can be divided in two parts, 426 and 1018, that added together give a square (1444 = 38²).

The spelling of 4261018 in words is "four million, two hundred sixty-one thousand, eighteen".