438971683481 has 8 divisors (see below), whose sum is σ = 443520914760. Its totient is φ = 434422937088.

The previous prime is 438971683477. The next prime is 438971683489. The reversal of 438971683481 is 184386179834.

It can be written as a sum of positive squares in 4 ways, for example, as 106596373081 + 332375310400 = 326491^2 + 576520^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438971683481 - 2² = 438971683477 is a prime.

It is a super-2 number, since 2×438971683481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438971683489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1866755 + ... + 2088711.

It is an arithmetic number, because the mean of its divisors is an integer number (55440114345).

Almost surely, 2^438971683481 is an apocalyptic number.

It is an amenable number.

438971683481 is a deficient number, since it is larger than the sum of its proper divisors (4549231279).

438971683481 is a wasteful number, since it uses less digits than its factorization.

438971683481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242443.

The product of its digits is 27869184, while the sum is 62.

The spelling of 438971683481 in words is "four hundred thirty-eight billion, nine hundred seventy-one million, six hundred eighty-three thousand, four hundred eighty-one".