18970841 has 2 divisors, whose sum is σ = 18970842. Its totient is φ = 18970840.

The previous prime is 18970811. The next prime is 18970867. The reversal of 18970841 is 14807981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 3916441 = 3880^2 + 1979^2 .

It is an emirp because it is prime and its reverse (14807981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18970841 - 2¹⁰ = 18969817 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18970795 and 18970804.

It is not a weakly prime, because it can be changed into another prime (18970811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9485420 + 9485421.

It is an arithmetic number, because the mean of its divisors is an integer number (9485421).

Almost surely, 2^18970841 is an apocalyptic number.

It is an amenable number.

18970841 is a deficient number, since it is larger than the sum of its proper divisors (1).

18970841 is an equidigital number, since it uses as much as digits as its factorization.

18970841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 18970841 is about 4355.5528925729. The cubic root of 18970841 is about 266.7035898526.

The spelling of 18970841 in words is "eighteen million, nine hundred seventy thousand, eight hundred forty-one".