4642648161 has 16 divisors (see below), whose sum is σ = 6348984768. Its totient is φ = 3015891200.

The previous prime is 4642648159. The next prime is 4642648169. The reversal of 4642648161 is 1618462464.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4642648161 - 2¹ = 4642648159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4642648169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78901 + ... + 124541.

It is an arithmetic number, because the mean of its divisors is an integer number (396811548).

Almost surely, 2^4642648161 is an apocalyptic number.

4642648161 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4642648161 is a deficient number, since it is larger than the sum of its proper divisors (1706336607).

4642648161 is a wasteful number, since it uses less digits than its factorization.

4642648161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46512.

The product of its digits is 221184, while the sum is 42.

The square root of 4642648161 is about 68136.9808620840. The cubic root of 4642648161 is about 1668.2274283886.

The spelling of 4642648161 in words is "four billion, six hundred forty-two million, six hundred forty-eight thousand, one hundred sixty-one".