745131445 has 8 divisors (see below), whose sum is σ = 896458680. Its totient is φ = 594571200.

The previous prime is 745131433. The next prime is 745131451. The reversal of 745131445 is 544131547.

It can be written as a sum of positive squares in 4 ways, for example, as 10125124 + 735006321 = 3182^2 + 27111^2 .

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

It is not a de Polignac number, because 745131445 - 2⁹ = 745130933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745131445.

It is a congruent number.

It is an unprimeable number.

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, 189606 + ... + 193495.

It is an arithmetic number, because the mean of its divisors is an integer number (112057335).

Almost surely, 2^745131445 is an apocalyptic number.

It is an amenable number.

745131445 is a deficient number, since it is larger than the sum of its proper divisors (151327235).

745131445 is a wasteful number, since it uses less digits than its factorization.

745131445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383495.

The product of its digits is 33600, while the sum is 34.

The square root of 745131445 is about 27297.0959078067. The cubic root of 745131445 is about 906.5900823042.

The spelling of 745131445 in words is "seven hundred forty-five million, one hundred thirty-one thousand, four hundred forty-five".