19801714 has 4 divisors (see below), whose sum is σ = 29702574. Its totient is φ = 9900856.

The previous prime is 19801673. The next prime is 19801721. The reversal of 19801714 is 41710891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41710891 = 23 ⋅1813517.

It can be written as a sum of positive squares in only one way, i.e., 19070689 + 731025 = 4367^2 + 855^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950427 + ... + 4950430.

Almost surely, 2^19801714 is an apocalyptic number.

19801714 is a deficient number, since it is larger than the sum of its proper divisors (9900860).

19801714 is an equidigital number, since it uses as much as digits as its factorization.

19801714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9900859.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 19801714 is about 4449.9116845169. The cubic root of 19801714 is about 270.5417289898.

The spelling of 19801714 in words is "nineteen million, eight hundred one thousand, seven hundred fourteen".