19427199507 has 24 divisors (see below), whose sum is σ = 28159901328. Its totient is φ = 12906129600.

The previous prime is 19427199503. The next prime is 19427199529. The reversal of 19427199507 is 70599172491.

19427199507 is a `hidden beast` number, since 1 + 9 + 42 + 7 + 1 + 99 + 507 = 666.

It is not a de Polignac number, because 19427199507 - 2² = 19427199503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19427199503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4139032 + ... + 4143722.

It is an arithmetic number, because the mean of its divisors is an integer number (1173329222).

Almost surely, 2^19427199507 is an apocalyptic number.

19427199507 is a deficient number, since it is larger than the sum of its proper divisors (8732701821).

19427199507 is a wasteful number, since it uses less digits than its factorization.

19427199507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211 (or 6208 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 19427199507 in words is "nineteen billion, four hundred twenty-seven million, one hundred ninety-nine thousand, five hundred seven".