2005445423 has 8 divisors (see below), whose sum is σ = 2054955840. Its totient is φ = 1955963520.

The previous prime is 2005445369. The next prime is 2005445447. The reversal of 2005445423 is 3245445002.

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 2005445423 - 2²⁶ = 1938336559 is a prime.

It is a super-2 number, since 2×2005445423² = 8043622689263297858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005445483) 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, 235211 + ... + 243587.

It is an arithmetic number, because the mean of its divisors is an integer number (256869480).

Almost surely, 2^2005445423 is an apocalyptic number.

2005445423 is a deficient number, since it is larger than the sum of its proper divisors (49510417).

2005445423 is an equidigital number, since it uses as much as digits as its factorization.

2005445423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14257.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 2005445423 is about 44782.1998454743. The cubic root of 2005445423 is about 1261.0634808619.

The spelling of 2005445423 in words is "two billion, five million, four hundred forty-five thousand, four hundred twenty-three".