438241631 has 16 divisors (see below), whose sum is σ = 466896000. Its totient is φ = 410181408.

The previous prime is 438241621. The next prime is 438241663. The reversal of 438241631 is 136142834.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438241631 is a prime.

It is a super-2 number, since 2×438241631² = 384111454283080322, 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 (438241621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800900 + ... + 801446.

It is an arithmetic number, because the mean of its divisors is an integer number (29181000).

Almost surely, 2^438241631 is an apocalyptic number.

438241631 is a deficient number, since it is larger than the sum of its proper divisors (28654369).

438241631 is a wasteful number, since it uses less digits than its factorization.

438241631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its digits is 13824, while the sum is 32.

The square root of 438241631 is about 20934.2215283970. The cubic root of 438241631 is about 759.5759586259.

The spelling of 438241631 in words is "four hundred thirty-eight million, two hundred forty-one thousand, six hundred thirty-one".