14891813 has 8 divisors (see below), whose sum is σ = 15807960. Its totient is φ = 13980160.

The previous prime is 14891791. The next prime is 14891837. The reversal of 14891813 is 31819841.

It can be written as a sum of positive squares in 4 ways, for example, as 8168164 + 6723649 = 2858^2 + 2593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14891813 - 2¹⁸ = 14629669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14891713) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 7793 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (1975995).

Almost surely, 2^14891813 is an apocalyptic number.

It is an amenable number.

14891813 is a deficient number, since it is larger than the sum of its proper divisors (916147).

14891813 is a wasteful number, since it uses less digits than its factorization.

14891813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247.

The product of its digits is 6912, while the sum is 35.

The square root of 14891813 is about 3858.9911894173. The cubic root of 14891813 is about 246.0268604861.

The spelling of 14891813 in words is "fourteen million, eight hundred ninety-one thousand, eight hundred thirteen".