738647666746838 has 16 divisors (see below), whose sum is σ = 1173403169090784. Its totient is φ = 347522790933120.

The previous prime is 738647666746823. The next prime is 738647666746861. The reversal of 738647666746838 is 838647666746837.

It is a super-3 number, since 3×738647666746838³ (a number of 46 digits) contains 333 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 (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2378313233 + ... + 2378623788.

It is an arithmetic number, because the mean of its divisors is an integer number (73337698068174).

Almost surely, 2^{738647666746838} is an apocalyptic number.

738647666746838 is a deficient number, since it is larger than the sum of its proper divisors (434755502343946).

738647666746838 is a wasteful number, since it uses less digits than its factorization.

738647666746838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756941607.

The product of its digits is 196644962304, while the sum is 89.

Subtracting 738647666746838 from its reverse (838647666746837), we obtain a palindrome (99999999999999).

The spelling of 738647666746838 in words is "seven hundred thirty-eight trillion, six hundred forty-seven billion, six hundred sixty-six million, seven hundred forty-six thousand, eight hundred thirty-eight".