4636121365 has 4 divisors (see below), whose sum is σ = 5563345644. Its totient is φ = 3708897088.

The previous prime is 4636121363. The next prime is 4636121377. The reversal of 4636121365 is 5631216364.

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 3580586244 + 1055535121 = 59838^2 + 32489^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636121365 - 2¹ = 4636121363 is a prime.

It is a super-2 number, since 2×4636121365² = 42987242622018926450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4636121363) 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, 463612132 + ... + 463612141.

It is an arithmetic number, because the mean of its divisors is an integer number (1390836411).

Almost surely, 2^4636121365 is an apocalyptic number.

It is an amenable number.

4636121365 is a deficient number, since it is larger than the sum of its proper divisors (927224279).

4636121365 is an equidigital number, since it uses as much as digits as its factorization.

4636121365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927224278.

The product of its digits is 77760, while the sum is 37.

The square root of 4636121365 is about 68089.0693503737. The cubic root of 4636121365 is about 1667.4453110822.

The spelling of 4636121365 in words is "four billion, six hundred thirty-six million, one hundred twenty-one thousand, three hundred sixty-five".