3120648161 has 4 divisors (see below), whose sum is σ = 3164601024. Its totient is φ = 3076695300.

The previous prime is 3120648149. The next prime is 3120648221. The reversal of 3120648161 is 1618460213.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3120648161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3120648101) 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, 21976325 + ... + 21976466.

It is an arithmetic number, because the mean of its divisors is an integer number (791150256).

Almost surely, 2^3120648161 is an apocalyptic number.

It is an amenable number.

3120648161 is a deficient number, since it is larger than the sum of its proper divisors (43952863).

3120648161 is an equidigital number, since it uses as much as digits as its factorization.

3120648161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43952862.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 3120648161 is about 55862.7618454369. The cubic root of 3120648161 is about 1461.3298949287.

The spelling of 3120648161 in words is "three billion, one hundred twenty million, six hundred forty-eight thousand, one hundred sixty-one".