1168429287 has 4 divisors (see below), whose sum is σ = 1557905720. Its totient is φ = 778952856.

The previous prime is 1168429271. The next prime is 1168429303. The reversal of 1168429287 is 7829248611.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1168429271) and next prime (1168429303).

It is not a de Polignac number, because 1168429287 - 2⁴ = 1168429271 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 (1168429247) 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, 194738212 + ... + 194738217.

It is an arithmetic number, because the mean of its divisors is an integer number (389476430).

Almost surely, 2^1168429287 is an apocalyptic number.

1168429287 is a deficient number, since it is larger than the sum of its proper divisors (389476433).

1168429287 is an equidigital number, since it uses as much as digits as its factorization.

1168429287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389476432.

The product of its digits is 387072, while the sum is 48.

The square root of 1168429287 is about 34182.2949346588. The cubic root of 1168429287 is about 1053.2564920734.

The spelling of 1168429287 in words is "one billion, one hundred sixty-eight million, four hundred twenty-nine thousand, two hundred eighty-seven".