2040451109 has 2 divisors, whose sum is σ = 2040451110. Its totient is φ = 2040451108.

The previous prime is 2040451079. The next prime is 2040451111. The reversal of 2040451109 is 9011540402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2023020484 + 17430625 = 44978^2 + 4175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040451109 is a prime.

Together with 2040451111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040451139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020225554 + 1020225555.

It is an arithmetic number, because the mean of its divisors is an integer number (1020225555).

Almost surely, 2^2040451109 is an apocalyptic number.

It is an amenable number.

2040451109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040451109 is an equidigital number, since it uses as much as digits as its factorization.

2040451109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2040451109 is about 45171.3527470675. The cubic root of 2040451109 is about 1268.3586187981.

The spelling of 2040451109 in words is "two billion, forty million, four hundred fifty-one thousand, one hundred nine".