938473647391 has 16 divisors (see below), whose sum is σ = 1084350256128. Its totient is φ = 795566772000.

The previous prime is 938473647379. The next prime is 938473647407. The reversal of 938473647391 is 193746374839.

It is not a de Polignac number, because 938473647391 - 2⁹ = 938473646879 is a prime.

It is a super-2 number, since 2×938473647391² (a number of 25 digits) 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 (938473647341) 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, 84465 + ... + 1372618.

It is an arithmetic number, because the mean of its divisors is an integer number (67771891008).

Almost surely, 2^938473647391 is an apocalyptic number.

938473647391 is a deficient number, since it is larger than the sum of its proper divisors (145876608737).

938473647391 is a wasteful number, since it uses less digits than its factorization.

938473647391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458102.

The product of its digits is 82301184, while the sum is 64.

The spelling of 938473647391 in words is "nine hundred thirty-eight billion, four hundred seventy-three million, six hundred forty-seven thousand, three hundred ninety-one".