1840512489 has 16 divisors (see below), whose sum is σ = 2467584000. Its totient is φ = 1220242320.

The previous prime is 1840512449. The next prime is 1840512551. The reversal of 1840512489 is 9842150481.

It is not a de Polignac number, because 1840512489 - 2⁹ = 1840511977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840512489.

It is not an unprimeable number, because it can be changed into a prime (1840512409) 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, 524262 + ... + 527760.

It is an arithmetic number, because the mean of its divisors is an integer number (154224000).

Almost surely, 2^1840512489 is an apocalyptic number.

It is an amenable number.

1840512489 is a deficient number, since it is larger than the sum of its proper divisors (627071511).

1840512489 is a wasteful number, since it uses less digits than its factorization.

1840512489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 1840512489 is about 42901.1944938600. The cubic root of 1840512489 is about 1225.4988919491.

The spelling of 1840512489 in words is "one billion, eight hundred forty million, five hundred twelve thousand, four hundred eighty-nine".