3720081109 has 2 divisors, whose sum is σ = 3720081110. Its totient is φ = 3720081108.

The previous prime is 3720081073. The next prime is 3720081119. The reversal of 3720081109 is 9011800273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3706130884 + 13950225 = 60878^2 + 3735^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720081109 - 2²⁹ = 3183210197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3720081119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860040554 + 1860040555.

It is an arithmetic number, because the mean of its divisors is an integer number (1860040555).

Almost surely, 2^3720081109 is an apocalyptic number.

It is an amenable number.

3720081109 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720081109 is an equidigital number, since it uses as much as digits as its factorization.

3720081109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 3720081109 is about 60992.4676415047. The cubic root of 3720081109 is about 1549.4734401474.

The spelling of 3720081109 in words is "three billion, seven hundred twenty million, eighty-one thousand, one hundred nine".