2085516749 has 4 divisors (see below), whose sum is σ = 2091705564. Its totient is φ = 2079327936.

The previous prime is 2085516737. The next prime is 2085516751. The reversal of 2085516749 is 9476155802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1517647849 + 567868900 = 38957^2 + 23830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085516749 - 2⁴ = 2085516733 is a prime.

It is a super-2 number, since 2×2085516749² = 8698760220719058002, 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 (2085516709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3093902 + ... + 3094575.

It is an arithmetic number, because the mean of its divisors is an integer number (522926391).

Almost surely, 2^2085516749 is an apocalyptic number.

It is an amenable number.

2085516749 is a deficient number, since it is larger than the sum of its proper divisors (6188815).

2085516749 is an equidigital number, since it uses as much as digits as its factorization.

2085516749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188814.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 2085516749 is about 45667.4583155227. The cubic root of 2085516749 is about 1277.6284107475.

The spelling of 2085516749 in words is "two billion, eighty-five million, five hundred sixteen thousand, seven hundred forty-nine".