3720020537 has 4 divisors (see below), whose sum is σ = 3726089700. Its totient is φ = 3713951376.

The previous prime is 3720020503. The next prime is 3720020539. The reversal of 3720020537 is 7350200273.

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 1578552361 + 2141468176 = 39731^2 + 46276^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720020537 - 2⁸ = 3720020281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720020539) 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 in 3 ways as a sum of consecutive naturals, for example, 3033662 + ... + 3034887.

It is an arithmetic number, because the mean of its divisors is an integer number (931522425).

Almost surely, 2^3720020537 is an apocalyptic number.

It is an amenable number.

3720020537 is a deficient number, since it is larger than the sum of its proper divisors (6069163).

3720020537 is an equidigital number, since it uses as much as digits as its factorization.

3720020537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069162.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 3720020537 is about 60991.9710863651. The cubic root of 3720020537 is about 1549.4650303653.

The spelling of 3720020537 in words is "three billion, seven hundred twenty million, twenty thousand, five hundred thirty-seven".