2259981673 has 4 divisors (see below), whose sum is σ = 2260874320. Its totient is φ = 2259089028.

The previous prime is 2259981667. The next prime is 2259981697. The reversal of 2259981673 is 3761899522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2259981673 - 2²⁵ = 2226427241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2259981673.

It is not an unprimeable number, because it can be changed into a prime (2259981643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442515 + ... + 447592.

It is an arithmetic number, because the mean of its divisors is an integer number (565218580).

Almost surely, 2^2259981673 is an apocalyptic number.

It is an amenable number.

2259981673 is a deficient number, since it is larger than the sum of its proper divisors (892647).

2259981673 is an equidigital number, since it uses as much as digits as its factorization.

2259981673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892646.

The product of its digits is 1632960, while the sum is 52.

The square root of 2259981673 is about 47539.2645399569. The cubic root of 2259981673 is about 1312.3055708124.

The spelling of 2259981673 in words is "two billion, two hundred fifty-nine million, nine hundred eighty-one thousand, six hundred seventy-three".