738561823 has 16 divisors (see below), whose sum is σ = 773579520. Its totient is φ = 704491200.

The previous prime is 738561781. The next prime is 738561881. The reversal of 738561823 is 328165837.

738561823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-738561823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 738561823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738561893) 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, 509686 + ... + 511132.

It is an arithmetic number, because the mean of its divisors is an integer number (48348720).

Almost surely, 2^738561823 is an apocalyptic number.

738561823 is a deficient number, since it is larger than the sum of its proper divisors (35017697).

738561823 is a wasteful number, since it uses less digits than its factorization.

738561823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its digits is 241920, while the sum is 43.

The square root of 738561823 is about 27176.4939423760. The cubic root of 738561823 is about 903.9178269833.

The spelling of 738561823 in words is "seven hundred thirty-eight million, five hundred sixty-one thousand, eight hundred twenty-three".