13861813 has 8 divisors (see below), whose sum is σ = 16228800. Its totient is φ = 11591520.

The previous prime is 13861807. The next prime is 13861819. The reversal of 13861813 is 31816831.

It is an interprime number because it is at equal distance from previous prime (13861807) and next prime (13861819).

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

It is a de Polignac number, because none of the positive numbers 2^k-13861813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13861819) 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, 23863 + ... + 24436.

It is an arithmetic number, because the mean of its divisors is an integer number (2028600).

Almost surely, 2^13861813 is an apocalyptic number.

It is an amenable number.

13861813 is a deficient number, since it is larger than the sum of its proper divisors (2366987).

13861813 is an equidigital number, since it uses as much as digits as its factorization.

13861813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48347.

The product of its digits is 3456, while the sum is 31.

The square root of 13861813 is about 3723.1455786740. The cubic root of 13861813 is about 240.2186260154.

The spelling of 13861813 in words is "thirteen million, eight hundred sixty-one thousand, eight hundred thirteen".