745518305 has 16 divisors (see below), whose sum is σ = 1046204544. Its totient is φ = 499322880.

The previous prime is 745518281. The next prime is 745518307. The reversal of 745518305 is 503815547.

It is a de Polignac number, because none of the positive numbers 2^k-745518305 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745518307) 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 15 ways as a sum of consecutive naturals, for example, 246176 + ... + 249185.

It is an arithmetic number, because the mean of its divisors is an integer number (65387784).

Almost surely, 2^745518305 is an apocalyptic number.

It is an amenable number.

745518305 is a deficient number, since it is larger than the sum of its proper divisors (300686239).

745518305 is a wasteful number, since it uses less digits than its factorization.

745518305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495416.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 745518305 is about 27304.1810900822. The cubic root of 745518305 is about 906.7469507165.

The spelling of 745518305 in words is "seven hundred forty-five million, five hundred eighteen thousand, three hundred five".