2169454881 has 32 divisors (see below), whose sum is σ = 3456432000. Its totient is φ = 1194798080.

The previous prime is 2169454873. The next prime is 2169454891. The reversal of 2169454881 is 1884549612.

It is not a de Polignac number, because 2169454881 - 2³ = 2169454873 is a prime.

It is a super-2 number, since 2×2169454881² = 9413068961389448322, 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 2169454881.

It is not an unprimeable number, because it can be changed into a prime (2169454891) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 50406 + ... + 82943.

It is an arithmetic number, because the mean of its divisors is an integer number (108013500).

Almost surely, 2^2169454881 is an apocalyptic number.

It is an amenable number.

2169454881 is a deficient number, since it is larger than the sum of its proper divisors (1286977119).

2169454881 is a wasteful number, since it uses less digits than its factorization.

2169454881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133409.

The product of its digits is 552960, while the sum is 48.

The square root of 2169454881 is about 46577.4074096015. The cubic root of 2169454881 is about 1294.5441727415.

The spelling of 2169454881 in words is "two billion, one hundred sixty-nine million, four hundred fifty-four thousand, eight hundred eighty-one".