18853197 has 16 divisors (see below), whose sum is σ = 27835392. Its totient is φ = 11254320.

The previous prime is 18853193. The next prime is 18853243. The reversal of 18853197 is 79135881.

It is not a de Polignac number, because 18853197 - 2² = 18853193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18853193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2053 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (1739712).

Almost surely, 2^18853197 is an apocalyptic number.

It is an amenable number.

18853197 is a deficient number, since it is larger than the sum of its proper divisors (8982195).

18853197 is a wasteful number, since it uses less digits than its factorization.

18853197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8608.

The product of its digits is 60480, while the sum is 42.

The square root of 18853197 is about 4342.0268308706. The cubic root of 18853197 is about 266.1511427391.

The spelling of 18853197 in words is "eighteen million, eight hundred fifty-three thousand, one hundred ninety-seven".