2054450509 has 8 divisors (see below), whose sum is σ = 2177131320. Its totient is φ = 1935225600.

The previous prime is 2054450491. The next prime is 2054450513. The reversal of 2054450509 is 9050544502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 347934409 + 1706516100 = 18653^2 + 41310^2 .

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 2054450509 - 2⁹ = 2054449997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054450549) 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, 862752 + ... + 865129.

It is an arithmetic number, because the mean of its divisors is an integer number (272141415).

Almost surely, 2^2054450509 is an apocalyptic number.

2054450509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2054450509 is a deficient number, since it is larger than the sum of its proper divisors (122680811).

2054450509 is a wasteful number, since it uses less digits than its factorization.

2054450509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727951.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2054450509 is about 45326.0466950296. The cubic root of 2054450509 is about 1271.2527182899.

The spelling of 2054450509 in words is "two billion, fifty-four million, four hundred fifty thousand, five hundred nine".