268159881 has 8 divisors (see below), whose sum is σ = 390050784. Its totient is φ = 162521120.

The previous prime is 268159849. The next prime is 268159883. The reversal of 268159881 is 188951862.

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

It is a cyclic number.

It is not a de Polignac number, because 268159881 - 2⁵ = 268159849 is a prime.

It is a super-2 number, since 2×268159881² = 143819443555868322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268159881.

It is not an unprimeable number, because it can be changed into a prime (268159883) 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, 4062996 + ... + 4063061.

It is an arithmetic number, because the mean of its divisors is an integer number (48756348).

Almost surely, 2^268159881 is an apocalyptic number.

It is an amenable number.

268159881 is a deficient number, since it is larger than the sum of its proper divisors (121890903).

268159881 is a wasteful number, since it uses less digits than its factorization.

268159881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8126071.

The product of its digits is 276480, while the sum is 48.

The square root of 268159881 is about 16375.5879589101. The cubic root of 268159881 is about 644.8587564049.

The spelling of 268159881 in words is "two hundred sixty-eight million, one hundred fifty-nine thousand, eight hundred eighty-one".