438788690245 has 4 divisors (see below), whose sum is σ = 526546428300. Its totient is φ = 351030952192.

The previous prime is 438788690233. The next prime is 438788690393. The reversal of 438788690245 is 542096887834.

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 219369520161 + 219419170084 = 468369^2 + 468422^2 .

It is a cyclic number.

It is not a de Polignac number, because 438788690245 - 2¹¹ = 438788688197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43878869020 + ... + 43878869029.

It is an arithmetic number, because the mean of its divisors is an integer number (131636607075).

Almost surely, 2^438788690245 is an apocalyptic number.

It is an amenable number.

438788690245 is a deficient number, since it is larger than the sum of its proper divisors (87757738055).

438788690245 is an equidigital number, since it uses as much as digits as its factorization.

438788690245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87757738054.

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 438788690245 in words is "four hundred thirty-eight billion, seven hundred eighty-eight million, six hundred ninety thousand, two hundred forty-five".