745173198 has 96 divisors (see below), whose sum is σ = 2118954240. Its totient is φ = 183358080.

The previous prime is 745173197. The next prime is 745173239. The reversal of 745173198 is 891371547.

745173198 is a `hidden beast` number, since 7 + 451 + 7 + 3 + 198 = 666.

745173198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745173197) 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, 12186 + ... + 40482.

It is an arithmetic number, because the mean of its divisors is an integer number (22072440).

Almost surely, 2^745173198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745173198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1059477120).

745173198 is an abundant number, since it is smaller than the sum of its proper divisors (1373781042).

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

745173198 is a wasteful number, since it uses less digits than its factorization.

745173198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28342 (or 28339 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 745173198 is about 27297.8606854090. The cubic root of 745173198 is about 906.6070154010.

The spelling of 745173198 in words is "seven hundred forty-five million, one hundred seventy-three thousand, one hundred ninety-eight".