19320947 has 2 divisors, whose sum is σ = 19320948. Its totient is φ = 19320946.

The previous prime is 19320941. The next prime is 19321007. The reversal of 19320947 is 74902391.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19320947 - 2¹⁸ = 19058803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19320941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9660473 + 9660474.

It is an arithmetic number, because the mean of its divisors is an integer number (9660474).

Almost surely, 2^19320947 is an apocalyptic number.

19320947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19320947 is an equidigital number, since it uses as much as digits as its factorization.

19320947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 19320947 is about 4395.5599188272. The cubic root of 19320947 is about 268.3342667646.

The spelling of 19320947 in words is "nineteen million, three hundred twenty thousand, nine hundred forty-seven".