3720131775 has 18 divisors (see below), whose sum is σ = 6663169760. Its totient is φ = 1984070160.

The previous prime is 3720131731. The next prime is 3720131783. The reversal of 3720131775 is 5771310273.

It is not a de Polignac number, because 3720131775 - 2¹⁸ = 3719869631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8266735 + ... + 8267184.

Almost surely, 2^3720131775 is an apocalyptic number.

3720131775 is a deficient number, since it is larger than the sum of its proper divisors (2943037985).

3720131775 is a wasteful number, since it uses less digits than its factorization.

3720131775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16533935 (or 16533927 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 36.

The square root of 3720131775 is about 60992.8829864600. The cubic root of 3720131775 is about 1549.4804745160.

The spelling of 3720131775 in words is "three billion, seven hundred twenty million, one hundred thirty-one thousand, seven hundred seventy-five".