1288630158 has 16 divisors (see below), whose sum is σ = 2728864080. Its totient is φ = 404276096.

The previous prime is 1288630157. The next prime is 1288630163. The reversal of 1288630158 is 8510368821.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288630153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6316713 + ... + 6316916.

It is an arithmetic number, because the mean of its divisors is an integer number (170554005).

Almost surely, 2^1288630158 is an apocalyptic number.

1288630158 is an abundant number, since it is smaller than the sum of its proper divisors (1440233922).

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

1288630158 is a wasteful number, since it uses less digits than its factorization.

1288630158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633651.

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

The square root of 1288630158 is about 35897.4951493833. The cubic root of 1288630158 is about 1088.2017759197.

Adding to 1288630158 its reverse (8510368821), we get a palindrome (9798998979).

The spelling of 1288630158 in words is "one billion, two hundred eighty-eight million, six hundred thirty thousand, one hundred fifty-eight".