19982698 has 4 divisors (see below), whose sum is σ = 29974050. Its totient is φ = 9991348.

The previous prime is 19982687. The next prime is 19982707. The reversal of 19982698 is 89628991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89628991 = 929 ⋅96479.

It can be written as a sum of positive squares in only one way, i.e., 18003049 + 1979649 = 4243^2 + 1407^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995673 + ... + 4995676.

Almost surely, 2^19982698 is an apocalyptic number.

19982698 is a deficient number, since it is larger than the sum of its proper divisors (9991352).

19982698 is an equidigital number, since it uses as much as digits as its factorization.

19982698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9991351.

The product of its digits is 559872, while the sum is 52.

The square root of 19982698 is about 4470.2011140440. The cubic root of 19982698 is about 271.3634643208.

The spelling of 19982698 in words is "nineteen million, nine hundred eighty-two thousand, six hundred ninety-eight".