19679071 has 2 divisors, whose sum is σ = 19679072. Its totient is φ = 19679070.

The previous prime is 19678991. The next prime is 19679087. The reversal of 19679071 is 17097691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19679071 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19679171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9839535 + 9839536.

It is an arithmetic number, because the mean of its divisors is an integer number (9839536).

Almost surely, 2^19679071 is an apocalyptic number.

19679071 is a deficient number, since it is larger than the sum of its proper divisors (1).

19679071 is an equidigital number, since it uses as much as digits as its factorization.

19679071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 19679071 is about 4436.1098949417. The cubic root of 19679071 is about 269.9820335553.

The spelling of 19679071 in words is "nineteen million, six hundred seventy-nine thousand, seventy-one".