19475739207 has 12 divisors (see below), whose sum is σ = 28215104320. Its totient is φ = 12945296448.

The previous prime is 19475739203. The next prime is 19475739209. The reversal of 19475739207 is 70293757491.

19475739207 is a `hidden beast` number, since 1 + 9 + 47 + 573 + 9 + 20 + 7 = 666.

It is not a de Polignac number, because 19475739207 - 2² = 19475739203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19475739203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3207607 + ... + 3213672.

Almost surely, 2^19475739207 is an apocalyptic number.

19475739207 is a deficient number, since it is larger than the sum of its proper divisors (8739365113).

19475739207 is a wasteful number, since it uses less digits than its factorization.

19475739207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421622 (or 6421619 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 54.

The spelling of 19475739207 in words is "nineteen billion, four hundred seventy-five million, seven hundred thirty-nine thousand, two hundred seven".