738643423 has 8 divisors (see below), whose sum is σ = 848450592. Its totient is φ = 629907936.

The previous prime is 738643403. The next prime is 738643429. The reversal of 738643423 is 324346837.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-738643423 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 (738643429) 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 7 ways as a sum of consecutive naturals, for example, 266440 + ... + 269197.

It is an arithmetic number, because the mean of its divisors is an integer number (106056324).

Almost surely, 2^738643423 is an apocalyptic number.

738643423 is a deficient number, since it is larger than the sum of its proper divisors (109807169).

738643423 is a wasteful number, since it uses less digits than its factorization.

738643423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535841.

The product of its digits is 290304, while the sum is 40.

The square root of 738643423 is about 27177.9951983217. The cubic root of 738643423 is about 903.9511155432.

The spelling of 738643423 in words is "seven hundred thirty-eight million, six hundred forty-three thousand, four hundred twenty-three".