236441980009 has 9 divisors (see below), whose sum is σ = 239761274949. Its totient is φ = 233168038560.

The previous prime is 236441979997. The next prime is 236441980037. The reversal of 236441980009 is 900089144632.

The square root of 236441980009 is 486253.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 77058984025 + 159382995984 = 277595^2 + 399228^2 .

It is not a de Polignac number, because 236441980009 - 2¹⁹ = 236441455721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (236441980409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35493139 + ... + 35499799.

It is an arithmetic number, because the mean of its divisors is an integer number (26640141661).

Almost surely, 2^236441980009 is an apocalyptic number.

236441980009 is the 486253-rd square number.

236441980009 is the 243127-th centered octagonal number.

It is an amenable number.

236441980009 is a deficient number, since it is larger than the sum of its proper divisors (3319294940).

236441980009 is an frugal number, since it uses more digits than its factorization.

236441980009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468 (or 6734 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 236441980009 in words is "two hundred thirty-six billion, four hundred forty-one million, nine hundred eighty thousand, nine".