537891426638 has 12 divisors (see below), whose sum is σ = 808663144128. Its totient is φ = 268338416580.

The previous prime is 537891426637. The next prime is 537891426659. The reversal of 537891426638 is 836624198735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537891426637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 292718 + ... + 1077713.

It is an arithmetic number, because the mean of its divisors is an integer number (67388595344).

Almost surely, 2^537891426638 is an apocalyptic number.

537891426638 is a deficient number, since it is larger than the sum of its proper divisors (270771717490).

537891426638 is an equidigital number, since it uses as much as digits as its factorization.

537891426638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371319 (or 1370876 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 62.

The spelling of 537891426638 in words is "five hundred thirty-seven billion, eight hundred ninety-one million, four hundred twenty-six thousand, six hundred thirty-eight".