18494801 has 4 divisors (see below), whose sum is σ = 19917492. Its totient is φ = 17072112.

The previous prime is 18494797. The next prime is 18494803. The reversal of 18494801 is 10849481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10849481 = 1427 ⋅7603.

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 12418576 = 2465^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 18494801 - 2² = 18494797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18494803) 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 in 3 ways as a sum of consecutive naturals, for example, 711326 + ... + 711351.

It is an arithmetic number, because the mean of its divisors is an integer number (4979373).

Almost surely, 2^18494801 is an apocalyptic number.

It is an amenable number.

18494801 is a deficient number, since it is larger than the sum of its proper divisors (1422691).

18494801 is a wasteful number, since it uses less digits than its factorization.

18494801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422690.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18494801 is about 4300.5582195803. The cubic root of 18494801 is about 264.4538460997.

It can be divided in two parts, 1849480 and 1, that added together give a palindrome (1849481).

The spelling of 18494801 in words is "eighteen million, four hundred ninety-four thousand, eight hundred one".