2005745899 has 2 divisors, whose sum is σ = 2005745900. Its totient is φ = 2005745898.

The previous prime is 2005745893. The next prime is 2005745933. The reversal of 2005745899 is 9985475002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005745899 - 2³ = 2005745891 is a prime.

It is a super-2 number, since 2×2005745899² = 8046033222710636402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2005745891) 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 as a sum of consecutive naturals, namely, 1002872949 + 1002872950.

It is an arithmetic number, because the mean of its divisors is an integer number (1002872950).

Almost surely, 2^2005745899 is an apocalyptic number.

2005745899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005745899 is an equidigital number, since it uses as much as digits as its factorization.

2005745899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 2005745899 is about 44785.5545795740. The cubic root of 2005745899 is about 1261.1264594540.

It can be divided in two parts, 20057 and 45899, that added together give a palindrome (65956).

The spelling of 2005745899 in words is "two billion, five million, seven hundred forty-five thousand, eight hundred ninety-nine".