1289630016 has 84 divisors (see below), whose sum is σ = 3891076800. Its totient is φ = 407248128.

The previous prime is 1289629993. The next prime is 1289630021. The reversal of 1289630016 is 6100369821.

1289630016 is a `hidden beast` number, since 1 + 2 + 8 + 9 + 630 + 0 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47976 + ... + 69863.

Almost surely, 2^1289630016 is an apocalyptic number.

1289630016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1289630016 is an abundant number, since it is smaller than the sum of its proper divisors (2601446784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289630016 is a wasteful number, since it uses less digits than its factorization.

1289630016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117876 (or 117863 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1289630016 is about 35911.4190195821. The cubic root of 1289630016 is about 1088.4831511867.

Adding to 1289630016 its reverse (6100369821), we get a palindrome (7389999837).

The spelling of 1289630016 in words is "one billion, two hundred eighty-nine million, six hundred thirty thousand, sixteen".