2489169081 has 48 divisors (see below), whose sum is σ = 4163261760. Its totient is φ = 1314593280.

The previous prime is 2489169061. The next prime is 2489169083. The reversal of 2489169081 is 1809619842.

It is not a de Polignac number, because 2489169081 - 2¹¹ = 2489167033 is a prime.

It is a super-2 number, since 2×2489169081² = 12391925427612769122, 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 2489169081.

It is not an unprimeable number, because it can be changed into a prime (2489169083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103645 + ... + 125381.

It is an arithmetic number, because the mean of its divisors is an integer number (86734620).

Almost surely, 2^2489169081 is an apocalyptic number.

2489169081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2489169081 is a deficient number, since it is larger than the sum of its proper divisors (1674092679).

2489169081 is a wasteful number, since it uses less digits than its factorization.

2489169081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21814 (or 21807 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 2489169081 is about 49891.5732463910. The cubic root of 2489169081 is about 1355.2459951974.

The spelling of 2489169081 in words is "two billion, four hundred eighty-nine million, one hundred sixty-nine thousand, eighty-one".