19140971 has 2 divisors, whose sum is σ = 19140972. Its totient is φ = 19140970.

The previous prime is 19140967. The next prime is 19141013. The reversal of 19140971 is 17904191.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (17904191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19140971 - 2² = 19140967 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19140941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9570485 + 9570486.

It is an arithmetic number, because the mean of its divisors is an integer number (9570486).

Almost surely, 2^19140971 is an apocalyptic number.

19140971 is a deficient number, since it is larger than the sum of its proper divisors (1).

19140971 is an equidigital number, since it uses as much as digits as its factorization.

19140971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 19140971 is about 4375.0395426784. The cubic root of 19140971 is about 267.4984819549.

The spelling of 19140971 in words is "nineteen million, one hundred forty thousand, nine hundred seventy-one".