1288998886 has 8 divisors (see below), whose sum is σ = 2209712400. Its totient is φ = 552428088.

The previous prime is 1288998883. The next prime is 1288998889. The reversal of 1288998886 is 6888998821.

It is an interprime number because it is at equal distance from previous prime (1288998883) and next prime (1288998889).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288998883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46035661 + ... + 46035688.

It is an arithmetic number, because the mean of its divisors is an integer number (276214050).

Almost surely, 2^1288998886 is an apocalyptic number.

1288998886 is a deficient number, since it is larger than the sum of its proper divisors (920713514).

1288998886 is an equidigital number, since it uses as much as digits as its factorization.

1288998886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92071358.

The product of its digits is 31850496, while the sum is 67.

The square root of 1288998886 is about 35902.6306278523. The cubic root of 1288998886 is about 1088.3055585286.

The spelling of 1288998886 in words is "one billion, two hundred eighty-eight million, nine hundred ninety-eight thousand, eight hundred eighty-six".