19727499207 has 32 divisors (see below), whose sum is σ = 28796334336. Its totient is φ = 11940364800.

The previous prime is 19727499199. The next prime is 19727499217. The reversal of 19727499207 is 70299472791.

It is not a de Polignac number, because 19727499207 - 2³ = 19727499199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19727499217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560232 + ... + 594402.

It is an arithmetic number, because the mean of its divisors is an integer number (899885448).

Almost surely, 2^19727499207 is an apocalyptic number.

19727499207 is a deficient number, since it is larger than the sum of its proper divisors (9068835129).

19727499207 is a wasteful number, since it uses less digits than its factorization.

19727499207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34431.

The product of its (nonzero) digits is 4000752, while the sum is 57.

The spelling of 19727499207 in words is "nineteen billion, seven hundred twenty-seven million, four hundred ninety-nine thousand, two hundred seven".