19485539 has 2 divisors, whose sum is σ = 19485540. Its totient is φ = 19485538.

The previous prime is 19485533. The next prime is 19485581. The reversal of 19485539 is 93558491.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19485539 - 2⁴ = 19485523 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19485539.

It is not a weakly prime, because it can be changed into another prime (19485533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9742769 + 9742770.

It is an arithmetic number, because the mean of its divisors is an integer number (9742770).

Almost surely, 2^19485539 is an apocalyptic number.

19485539 is a deficient number, since it is larger than the sum of its proper divisors (1).

19485539 is an equidigital number, since it uses as much as digits as its factorization.

19485539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 19485539 is about 4414.2427436651. The cubic root of 19485539 is about 269.0940785625.

The spelling of 19485539 in words is "nineteen million, four hundred eighty-five thousand, five hundred thirty-nine".