3720385505 has 8 divisors (see below), whose sum is σ = 4525620072. Its totient is φ = 2935536768.

The previous prime is 3720385463. The next prime is 3720385523. The reversal of 3720385505 is 5055830273.

3720385505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1037870656 + 2682514849 = 32216^2 + 51793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3720385505 - 2¹² = 3720381409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5096054 + ... + 5096783.

It is an arithmetic number, because the mean of its divisors is an integer number (565702509).

Almost surely, 2^3720385505 is an apocalyptic number.

It is an amenable number.

3720385505 is a deficient number, since it is larger than the sum of its proper divisors (805234567).

3720385505 is a wasteful number, since it uses less digits than its factorization.

3720385505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10192915.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 3720385505 is about 60994.9629477714. The cubic root of 3720385505 is about 1549.5157009333.

The spelling of 3720385505 in words is "three billion, seven hundred twenty million, three hundred eighty-five thousand, five hundred five".