1812526 has 4 divisors (see below), whose sum is σ = 2718792. Its totient is φ = 906262.

The previous prime is 1812511. The next prime is 1812527. The reversal of 1812526 is 6252181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6252181 = 13 ⋅480937.

It is a self number, because there is not a number n which added to its sum of digits gives 1812526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453130 + ... + 453133.

It is an arithmetic number, because the mean of its divisors is an integer number (679698).

2^1812526 is an apocalyptic number.

1812526 is a deficient number, since it is larger than the sum of its proper divisors (906266).

1812526 is an equidigital number, since it uses as much as digits as its factorization.

1812526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906265.

The product of its digits is 960, while the sum is 25.

The square root of 1812526 is about 1346.3008579066. The cubic root of 1812526 is about 121.9255570216.

It can be divided in two parts, 18 and 12526, that added together give a square (12544 = 112²).

The spelling of 1812526 in words is "one million, eight hundred twelve thousand, five hundred twenty-six".