18914797 has 8 divisors (see below), whose sum is σ = 21114720. Its totient is φ = 16794960.

The previous prime is 18914789. The next prime is 18914801. The reversal of 18914797 is 79741981.

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

It is a cyclic number.

It is not a de Polignac number, because 18914797 - 2³ = 18914789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18914737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19522 + ... + 20467.

It is an arithmetic number, because the mean of its divisors is an integer number (2639340).

Almost surely, 2^18914797 is an apocalyptic number.

It is an amenable number.

18914797 is a deficient number, since it is larger than the sum of its proper divisors (2199923).

18914797 is a wasteful number, since it uses less digits than its factorization.

18914797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40043.

The product of its digits is 127008, while the sum is 46.

The square root of 18914797 is about 4349.1145075751. The cubic root of 18914797 is about 266.4406972863.

The spelling of 18914797 in words is "eighteen million, nine hundred fourteen thousand, seven hundred ninety-seven".