18963713 has 4 divisors (see below), whose sum is σ = 19203840. Its totient is φ = 18723588.

The previous prime is 18963649. The next prime is 18963727. The reversal of 18963713 is 31736981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18963713 - 2⁶ = 18963649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18963743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119945 + ... + 120102.

It is an arithmetic number, because the mean of its divisors is an integer number (4800960).

Almost surely, 2^18963713 is an apocalyptic number.

It is an amenable number.

18963713 is a deficient number, since it is larger than the sum of its proper divisors (240127).

18963713 is an equidigital number, since it uses as much as digits as its factorization.

18963713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240126.

The product of its digits is 27216, while the sum is 38.

The square root of 18963713 is about 4354.7345498894. The cubic root of 18963713 is about 266.6701824189.

The spelling of 18963713 in words is "eighteen million, nine hundred sixty-three thousand, seven hundred thirteen".