3720020539 has 2 divisors, whose sum is σ = 3720020540. Its totient is φ = 3720020538.

The previous prime is 3720020503. The next prime is 3720020543. The reversal of 3720020539 is 9350200273.

It is a strong prime.

It is an emirp because it is prime and its reverse (9350200273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3720020539 - 2⁷ = 3720020411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3720020539.

It is not a weakly prime, because it can be changed into another prime (3720020039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860010269 + 1860010270.

It is an arithmetic number, because the mean of its divisors is an integer number (1860010270).

Almost surely, 2^3720020539 is an apocalyptic number.

3720020539 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720020539 is an equidigital number, since it uses as much as digits as its factorization.

3720020539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 3720020539 is about 60991.9711027607. The cubic root of 3720020539 is about 1549.4650306430.

The spelling of 3720020539 in words is "three billion, seven hundred twenty million, twenty thousand, five hundred thirty-nine".