438673241731 has 4 divisors (see below), whose sum is σ = 439054366464. Its totient is φ = 438292117000.

The previous prime is 438673241693. The next prime is 438673241753. The reversal of 438673241731 is 137142376834.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137142376834 = 2 ⋅68571188417.

It is a cyclic number.

It is not a de Polignac number, because 438673241731 - 2¹⁹ = 438672717443 is a prime.

It is a super-4 number, since 4×438673241731⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438673242731) 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, 190560640 + ... + 190562941.

It is an arithmetic number, because the mean of its divisors is an integer number (109763591616).

Almost surely, 2^438673241731 is an apocalyptic number.

438673241731 is a deficient number, since it is larger than the sum of its proper divisors (381124733).

438673241731 is a wasteful number, since it uses less digits than its factorization.

438673241731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381124732.

The product of its digits is 2032128, while the sum is 49.

The spelling of 438673241731 in words is "four hundred thirty-eight billion, six hundred seventy-three million, two hundred forty-one thousand, seven hundred thirty-one".