1869045489 has 16 divisors (see below), whose sum is σ = 2776515840. Its totient is φ = 1242628560.

The previous prime is 1869045487. The next prime is 1869045509. The reversal of 1869045489 is 9845409681.

1869045489 is a `hidden beast` number, since 1 + 8 + 6 + 90 + 4 + 548 + 9 = 666.

It is not a de Polignac number, because 1869045489 - 2¹ = 1869045487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1869045487) 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, 84402 + ... + 104219.

It is an arithmetic number, because the mean of its divisors is an integer number (173532240).

Almost surely, 2^1869045489 is an apocalyptic number.

It is an amenable number.

1869045489 is a deficient number, since it is larger than the sum of its proper divisors (907470351).

1869045489 is a wasteful number, since it uses less digits than its factorization.

1869045489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188997 (or 188991 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 1869045489 is about 43232.4587434025. The cubic root of 1869045489 is about 1231.7993118546.

The spelling of 1869045489 in words is "one billion, eight hundred sixty-nine million, forty-five thousand, four hundred eighty-nine".