738644445 has 48 divisors (see below), whose sum is σ = 1596246912. Its totient is φ = 306967680.

The previous prime is 738644429. The next prime is 738644447. The reversal of 738644445 is 544446837.

738644445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 738644445 - 2⁴ = 738644429 is a prime.

It is a super-2 number, since 2×738644445² = 1091191232258716050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 738644445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738644447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103122 + ... + 110051.

It is an arithmetic number, because the mean of its divisors is an integer number (33255144).

Almost surely, 2^738644445 is an apocalyptic number.

It is an amenable number.

738644445 is an abundant number, since it is smaller than the sum of its proper divisors (857602467).

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

738644445 is a wasteful number, since it uses less digits than its factorization.

738644445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213202 (or 213199 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The square root of 738644445 is about 27178.0140002907. The cubic root of 738644445 is about 903.9515324506.

The spelling of 738644445 in words is "seven hundred thirty-eight million, six hundred forty-four thousand, four hundred forty-five".