7438489633686 has 16 divisors (see below), whose sum is σ = 15356881824768. Its totient is φ = 2399512785000.

The previous prime is 7438489633667. The next prime is 7438489633693. The reversal of 7438489633686 is 6863369848347.

It is a super-2 number, since 2×7438489633686² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19995939690 + ... + 19995940061.

It is an arithmetic number, because the mean of its divisors is an integer number (959805114048).

Almost surely, 2^{7438489633686} is an apocalyptic number.

7438489633686 is an abundant number, since it is smaller than the sum of its proper divisors (7918392191082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7438489633686 is a wasteful number, since it uses less digits than its factorization.

7438489633686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39991879787.

The product of its digits is 3009871872, while the sum is 75.

The spelling of 7438489633686 in words is "seven trillion, four hundred thirty-eight billion, four hundred eighty-nine million, six hundred thirty-three thousand, six hundred eighty-six".