3765615161 has 12 divisors (see below), whose sum is σ = 4778629200. Its totient is φ = 2934245160.

The previous prime is 3765615157. The next prime is 3765615181. The reversal of 3765615161 is 1615165673.

It is a happy number.

3765615161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3765615161 - 2² = 3765615157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3765615181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3492611 + ... + 3493688.

It is an arithmetic number, because the mean of its divisors is an integer number (398219100).

Almost surely, 2^3765615161 is an apocalyptic number.

It is an amenable number.

3765615161 is a deficient number, since it is larger than the sum of its proper divisors (1013014039).

3765615161 is a wasteful number, since it uses less digits than its factorization.

3765615161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986324 (or 6986317 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 3765615161 is about 61364.6083748605. The cubic root of 3765615161 is about 1555.7697083034.

The spelling of 3765615161 in words is "three billion, seven hundred sixty-five million, six hundred fifteen thousand, one hundred sixty-one".