19897114 has 4 divisors (see below), whose sum is σ = 29845674. Its totient is φ = 9948556.

The previous prime is 19897109. The next prime is 19897127. The reversal of 19897114 is 41179891.

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., 10131489 + 9765625 = 3183^2 + 3125^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4974277 + ... + 4974280.

Almost surely, 2^19897114 is an apocalyptic number.

19897114 is a deficient number, since it is larger than the sum of its proper divisors (9948560).

19897114 is an equidigital number, since it uses as much as digits as its factorization.

19897114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9948559.

The product of its digits is 18144, while the sum is 40.

The square root of 19897114 is about 4460.6181186019. The cubic root of 19897114 is about 270.9755019317.

The spelling of 19897114 in words is "nineteen million, eight hundred ninety-seven thousand, one hundred fourteen".