2168755738 has 8 divisors (see below), whose sum is σ = 3289685940. Its totient is φ = 1072193760.

The previous prime is 2168755727. The next prime is 2168755751. The reversal of 2168755738 is 8375578612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2031935929 + 136819809 = 45077^2 + 11697^2 .

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

It is a super-2 number, since 2×2168755738² = 9407002902215849288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6091833 + ... + 6092188.

Almost surely, 2^2168755738 is an apocalyptic number.

2168755738 is a deficient number, since it is larger than the sum of its proper divisors (1120930202).

2168755738 is a wasteful number, since it uses less digits than its factorization.

2168755738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184112.

The product of its digits is 2822400, while the sum is 52.

The square root of 2168755738 is about 46569.9016318480. The cubic root of 2168755738 is about 1294.4050949872.

The spelling of 2168755738 in words is "two billion, one hundred sixty-eight million, seven hundred fifty-five thousand, seven hundred thirty-eight".