438172142837 has 16 divisors (see below), whose sum is σ = 517821702720. Its totient is φ = 367696882800.

The previous prime is 438172142797. The next prime is 438172142857. The reversal of 438172142837 is 738241271834.

It is not a de Polignac number, because 438172142837 - 2⁸ = 438172142581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438172142857) 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 15 ways as a sum of consecutive naturals, for example, 9041339 + ... + 9089672.

It is an arithmetic number, because the mean of its divisors is an integer number (32363856420).

Almost surely, 2^438172142837 is an apocalyptic number.

It is an amenable number.

438172142837 is a deficient number, since it is larger than the sum of its proper divisors (79649559883).

438172142837 is a wasteful number, since it uses less digits than its factorization.

438172142837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18131061 (or 18131035 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

The spelling of 438172142837 in words is "four hundred thirty-eight billion, one hundred seventy-two million, one hundred forty-two thousand, eight hundred thirty-seven".