18943102 has 4 divisors (see below), whose sum is σ = 28414656. Its totient is φ = 9471550.

The previous prime is 18943097. The next prime is 18943103. The reversal of 18943102 is 20134981.

It is a happy number.

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

It is a super-2 number, since 2×18943102² = 717682226764808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18943103) by changing a digit.

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, 4735774 + ... + 4735777.

It is an arithmetic number, because the mean of its divisors is an integer number (7103664).

Almost surely, 2^18943102 is an apocalyptic number.

18943102 is a deficient number, since it is larger than the sum of its proper divisors (9471554).

18943102 is an equidigital number, since it uses as much as digits as its factorization.

18943102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9471553.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18943102 is about 4352.3674017711. The cubic root of 18943102 is about 266.5735358815.

The spelling of 18943102 in words is "eighteen million, nine hundred forty-three thousand, one hundred two".