1284118959 has 4 divisors (see below), whose sum is σ = 1712158616. Its totient is φ = 856079304.

The previous prime is 1284118951. The next prime is 1284118961. The reversal of 1284118959 is 9598114821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1284118959 - 2³ = 1284118951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284118951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214019824 + ... + 214019829.

It is an arithmetic number, because the mean of its divisors is an integer number (428039654).

Almost surely, 2^1284118959 is an apocalyptic number.

1284118959 is a deficient number, since it is larger than the sum of its proper divisors (428039657).

1284118959 is an equidigital number, since it uses as much as digits as its factorization.

1284118959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428039656.

The product of its digits is 207360, while the sum is 48.

The square root of 1284118959 is about 35834.6056068711. The cubic root of 1284118959 is about 1086.9304428329.

The spelling of 1284118959 in words is "one billion, two hundred eighty-four million, one hundred eighteen thousand, nine hundred fifty-nine".