2072730749 has 2 divisors, whose sum is σ = 2072730750. Its totient is φ = 2072730748.

The previous prime is 2072730733. The next prime is 2072730757. The reversal of 2072730749 is 9470372702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1452372100 + 620358649 = 38110^2 + 24907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2072730749 - 2⁴ = 2072730733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2072730449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036365374 + 1036365375.

It is an arithmetic number, because the mean of its divisors is an integer number (1036365375).

Almost surely, 2^2072730749 is an apocalyptic number.

It is an amenable number.

2072730749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2072730749 is an equidigital number, since it uses as much as digits as its factorization.

2072730749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 2072730749 is about 45527.2528163077. The cubic root of 2072730749 is about 1275.0120719605.

The spelling of 2072730749 in words is "two billion, seventy-two million, seven hundred thirty thousand, seven hundred forty-nine".