19718714 has 4 divisors (see below), whose sum is σ = 29578074. Its totient is φ = 9859356.

The previous prime is 19718701. The next prime is 19718717. The reversal of 19718714 is 41781791.

It is a happy number.

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., 19070689 + 648025 = 4367^2 + 805^2 .

It is not an unprimeable number, because it can be changed into a prime (19718717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4929677 + ... + 4929680.

Almost surely, 2^19718714 is an apocalyptic number.

19718714 is a deficient number, since it is larger than the sum of its proper divisors (9859360).

19718714 is an equidigital number, since it uses as much as digits as its factorization.

19718714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9859359.

The product of its digits is 14112, while the sum is 38.

The square root of 19718714 is about 4440.5758635564. The cubic root of 19718714 is about 270.1632026576.

The spelling of 19718714 in words is "nineteen million, seven hundred eighteen thousand, seven hundred fourteen".