19672243 has 2 divisors, whose sum is σ = 19672244. Its totient is φ = 19672242.

The previous prime is 19672231. The next prime is 19672249. The reversal of 19672243 is 34227691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19672243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19672199 and 19672208.

It is not a weakly prime, because it can be changed into another prime (19672249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9836121 + 9836122.

It is an arithmetic number, because the mean of its divisors is an integer number (9836122).

Almost surely, 2^19672243 is an apocalyptic number.

19672243 is a deficient number, since it is larger than the sum of its proper divisors (1).

19672243 is an equidigital number, since it uses as much as digits as its factorization.

19672243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 19672243 is about 4435.3402349763. The cubic root of 19672243 is about 269.9508049373.

The spelling of 19672243 in words is "nineteen million, six hundred seventy-two thousand, two hundred forty-three".