3915161 has 4 divisors (see below), whose sum is σ = 3964800. Its totient is φ = 3865524.

The previous prime is 3915157. The next prime is 3915167. The reversal of 3915161 is 1615193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1615193 = 31 ⋅52103.

It is a cyclic number.

It is not a de Polignac number, because 3915161 - 2² = 3915157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 3915161.

It is not an unprimeable number, because it can be changed into a prime (3915167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24701 + ... + 24858.

It is an arithmetic number, because the mean of its divisors is an integer number (991200).

Almost surely, 2^3915161 is an apocalyptic number.

It is an amenable number.

3915161 is a deficient number, since it is larger than the sum of its proper divisors (49639).

3915161 is an equidigital number, since it uses as much as digits as its factorization.

3915161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49638.

The product of its digits is 810, while the sum is 26.

The square root of 3915161 is about 1978.6765779177. The cubic root of 3915161 is about 157.6097966245.

Subtracting from 3915161 its reverse (1615193), we obtain a cube (2299968 = 132³).

The spelling of 3915161 in words is "three million, nine hundred fifteen thousand, one hundred sixty-one".