19946032247 has 2 divisors, whose sum is σ = 19946032248. Its totient is φ = 19946032246.

The previous prime is 19946032241. The next prime is 19946032277. The reversal of 19946032247 is 74223064991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19946032247 - 2³² = 15651064951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19946032241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9973016123 + 9973016124.

It is an arithmetic number, because the mean of its divisors is an integer number (9973016124).

Almost surely, 2^19946032247 is an apocalyptic number.

19946032247 is a deficient number, since it is larger than the sum of its proper divisors (1).

19946032247 is an equidigital number, since it uses as much as digits as its factorization.

19946032247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 19946032247 in words is "nineteen billion, nine hundred forty-six million, thirty-two thousand, two hundred forty-seven".