168280881 has 8 divisors (see below), whose sum is σ = 232111680. Its totient is φ = 108318672.

The previous prime is 168280859. The next prime is 168280907. The reversal of 168280881 is 188082861.

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

It is not a de Polignac number, because 168280881 - 2¹⁰ = 168279857 is a prime.

It is a super-2 number, since 2×168280881² = 56636909820272322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (168280481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967045 + ... + 967218.

It is an arithmetic number, because the mean of its divisors is an integer number (29013960).

Almost surely, 2^168280881 is an apocalyptic number.

It is an amenable number.

168280881 is a deficient number, since it is larger than the sum of its proper divisors (63830799).

168280881 is a wasteful number, since it uses less digits than its factorization.

168280881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934295.

The product of its (nonzero) digits is 49152, while the sum is 42.

The square root of 168280881 is about 12972.3120915279. The cubic root of 168280881 is about 552.0921757172.

The spelling of 168280881 in words is "one hundred sixty-eight million, two hundred eighty thousand, eight hundred eighty-one".