4628236561 has 4 divisors (see below), whose sum is σ = 4984254772. Its totient is φ = 4272218352.

The previous prime is 4628236559. The next prime is 4628236597. The reversal of 4628236561 is 1656328264.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 691427025 + 3936809536 = 26295^2 + 62744^2 .

It is a cyclic number.

It is not a de Polignac number, because 4628236561 - 2¹ = 4628236559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4628276561) 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, 178009086 + ... + 178009111.

It is an arithmetic number, because the mean of its divisors is an integer number (1246063693).

Almost surely, 2^4628236561 is an apocalyptic number.

It is an amenable number.

4628236561 is a deficient number, since it is larger than the sum of its proper divisors (356018211).

4628236561 is a wasteful number, since it uses less digits than its factorization.

4628236561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356018210.

The product of its digits is 414720, while the sum is 43.

The square root of 4628236561 is about 68031.1440518238. The cubic root of 4628236561 is about 1666.4994816612.

The spelling of 4628236561 in words is "four billion, six hundred twenty-eight million, two hundred thirty-six thousand, five hundred sixty-one".