3721161767 has 6 divisors (see below), whose sum is σ = 3853903248. Its totient is φ = 3592845032.

The previous prime is 3721161737. The next prime is 3721161779. The reversal of 3721161767 is 7671611273.

It is not a de Polignac number, because 3721161767 - 2¹⁰ = 3721160743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721161707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2211503 + ... + 2213184.

It is an arithmetic number, because the mean of its divisors is an integer number (642317208).

Almost surely, 2^3721161767 is an apocalyptic number.

3721161767 is a deficient number, since it is larger than the sum of its proper divisors (132741481).

3721161767 is an equidigital number, since it uses as much as digits as its factorization.

3721161767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424745 (or 4424716 counting only the distinct ones).

The product of its digits is 74088, while the sum is 41.

The square root of 3721161767 is about 61001.3259446055. The cubic root of 3721161767 is about 1549.6234627506.

The spelling of 3721161767 in words is "three billion, seven hundred twenty-one million, one hundred sixty-one thousand, seven hundred sixty-seven".