745905243 has 24 divisors (see below), whose sum is σ = 1062804528. Its totient is φ = 465220096.

The previous prime is 745905241. The next prime is 745905247. The reversal of 745905243 is 342509547.

It is not a de Polignac number, because 745905243 - 2¹ = 745905241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745905241) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 147505 + ... + 152477.

It is an arithmetic number, because the mean of its divisors is an integer number (44283522).

Almost surely, 2^745905243 is an apocalyptic number.

745905243 is a deficient number, since it is larger than the sum of its proper divisors (316899285).

745905243 is a wasteful number, since it uses less digits than its factorization.

745905243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183 (or 5166 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 745905243 is about 27311.2658622774. The cubic root of 745905243 is about 906.9037964825.

The spelling of 745905243 in words is "seven hundred forty-five million, nine hundred five thousand, two hundred forty-three".