18963242 has 4 divisors (see below), whose sum is σ = 28444866. Its totient is φ = 9481620.

The previous prime is 18963233. The next prime is 18963281. The reversal of 18963242 is 24236981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18931201 + 32041 = 4351^2 + 179^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4740809 + ... + 4740812.

Almost surely, 2^18963242 is an apocalyptic number.

18963242 is a deficient number, since it is larger than the sum of its proper divisors (9481624).

18963242 is an equidigital number, since it uses as much as digits as its factorization.

18963242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9481623.

The product of its digits is 20736, while the sum is 35.

The square root of 18963242 is about 4354.6804704823. The cubic root of 18963242 is about 266.6679746464.

The spelling of 18963242 in words is "eighteen million, nine hundred sixty-three thousand, two hundred forty-two".