19242289 has 16 divisors (see below), whose sum is σ = 21993984. Its totient is φ = 16675200.

The previous prime is 19242287. The next prime is 19242299. The reversal of 19242289 is 98224291.

It is a cyclic number.

It is not a de Polignac number, because 19242289 - 2¹ = 19242287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19242281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24507 + ... + 25279.

It is an arithmetic number, because the mean of its divisors is an integer number (1374624).

Almost surely, 2^19242289 is an apocalyptic number.

It is an amenable number.

19242289 is a deficient number, since it is larger than the sum of its proper divisors (2751695).

19242289 is a wasteful number, since it uses less digits than its factorization.

19242289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888.

The product of its digits is 20736, while the sum is 37.

The square root of 19242289 is about 4386.6033556728. The cubic root of 19242289 is about 267.9696306643.

The spelling of 19242289 in words is "nineteen million, two hundred forty-two thousand, two hundred eighty-nine".