20369863 has 2 divisors, whose sum is σ = 20369864. Its totient is φ = 20369862.

The previous prime is 20369857. The next prime is 20369873. The reversal of 20369863 is 36896302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20369863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20369873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184931 + 10184932.

It is an arithmetic number, because the mean of its divisors is an integer number (10184932).

Almost surely, 2^20369863 is an apocalyptic number.

20369863 is a deficient number, since it is larger than the sum of its proper divisors (1).

20369863 is an equidigital number, since it uses as much as digits as its factorization.

20369863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 20369863 is about 4513.2984612144. The cubic root of 20369863 is about 273.1048227305.

The spelling of 20369863 in words is "twenty million, three hundred sixty-nine thousand, eight hundred sixty-three".