745380198 has 32 divisors (see below), whose sum is σ = 1753837920. Its totient is φ = 233844480.

The previous prime is 745380197. The next prime is 745380227. The reversal of 745380198 is 891083547.

745380198 is a `hidden beast` number, since 7 + 453 + 8 + 0 + 198 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745380193) 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, 405063 + ... + 406898.

It is an arithmetic number, because the mean of its divisors is an integer number (54807435).

Almost surely, 2^745380198 is an apocalyptic number.

745380198 is an abundant number, since it is smaller than the sum of its proper divisors (1008457722).

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

745380198 is a wasteful number, since it uses less digits than its factorization.

745380198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811989 (or 811983 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 745380198 is about 27301.6519280427. The cubic root of 745380198 is about 906.6909557423.

The spelling of 745380198 in words is "seven hundred forty-five million, three hundred eighty thousand, one hundred ninety-eight".