19382947 has 2 divisors, whose sum is σ = 19382948. Its totient is φ = 19382946.

The previous prime is 19382927. The next prime is 19382959. The reversal of 19382947 is 74928391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19382947 - 2¹¹ = 19380899 is a prime.

It is not a weakly prime, because it can be changed into another prime (19382917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9691473 + 9691474.

It is an arithmetic number, because the mean of its divisors is an integer number (9691474).

Almost surely, 2^19382947 is an apocalyptic number.

19382947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19382947 is an equidigital number, since it uses as much as digits as its factorization.

19382947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 19382947 is about 4402.6068414066. The cubic root of 19382947 is about 268.6209842619.

The spelling of 19382947 in words is "nineteen million, three hundred eighty-two thousand, nine hundred forty-seven".