2168135742 has 8 divisors (see below), whose sum is σ = 4336271496. Its totient is φ = 722711912.

The previous prime is 2168135737. The next prime is 2168135759. The reversal of 2168135742 is 2475318612.

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

2168135742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2168135742.

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 3 ways as a sum of consecutive naturals, for example, 180677973 + ... + 180677984.

It is an arithmetic number, because the mean of its divisors is an integer number (542033937).

Almost surely, 2^2168135742 is an apocalyptic number.

2168135742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2168135742 is a wasteful number, since it uses less digits than its factorization.

2168135742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361355962.

The product of its digits is 80640, while the sum is 39.

The square root of 2168135742 is about 46563.2445390138. The cubic root of 2168135742 is about 1294.2817366249.

The spelling of 2168135742 in words is "two billion, one hundred sixty-eight million, one hundred thirty-five thousand, seven hundred forty-two".