19090241 has 2 divisors, whose sum is σ = 19090242. Its totient is φ = 19090240.

The previous prime is 19090189. The next prime is 19090273. The reversal of 19090241 is 14209091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9610000 + 9480241 = 3100^2 + 3079^2 .

It is a cyclic number.

It is not a de Polignac number, because 19090241 - 2⁶ = 19090177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19090241.

It is not a weakly prime, because it can be changed into another prime (19060241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9545120 + 9545121.

It is an arithmetic number, because the mean of its divisors is an integer number (9545121).

Almost surely, 2^19090241 is an apocalyptic number.

It is an amenable number.

19090241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19090241 is an equidigital number, since it uses as much as digits as its factorization.

19090241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 19090241 is about 4369.2380342572. The cubic root of 19090241 is about 267.2619526064.

The spelling of 19090241 in words is "nineteen million, ninety thousand, two hundred forty-one".