1912289 has 16 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 1700160.

The previous prime is 1912283. The next prime is 1912301. The reversal of 1912289 is 9822191.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1912289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912283) 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, 31319 + ... + 31379.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2^1912289 is an apocalyptic number.

It is an amenable number.

1912289 is a deficient number, since it is larger than the sum of its proper divisors (230431).

1912289 is a wasteful number, since it uses less digits than its factorization.

1912289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160.

The product of its digits is 2592, while the sum is 32.

The square root of 1912289 is about 1382.8553792787. The cubic root of 1912289 is about 124.1226890086.

The spelling of 1912289 in words is "one million, nine hundred twelve thousand, two hundred eighty-nine".