18914330 has 8 divisors (see below), whose sum is σ = 34045812. Its totient is φ = 7565728.

The previous prime is 18914327. The next prime is 18914339. The reversal of 18914330 is 3341981.

It can be written as a sum of positive squares in 2 ways, for example, as 18913801 + 529 = 4349^2 + 23^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18914293 and 18914302.

It is not an unprimeable number, because it can be changed into a prime (18914339) 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, 945707 + ... + 945726.

Almost surely, 2^18914330 is an apocalyptic number.

18914330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18914330 is a deficient number, since it is larger than the sum of its proper divisors (15131482).

18914330 is a wasteful number, since it uses less digits than its factorization.

18914330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891440.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 18914330 is about 4349.0608181537. The cubic root of 18914330 is about 266.4385044910.

The spelling of 18914330 in words is "eighteen million, nine hundred fourteen thousand, three hundred thirty".