745257538089 has 27 divisors (see below), whose sum is σ = 1089923418493. Its totient is φ = 490710775992.

The previous prime is 745257538049. The next prime is 745257538127. The reversal of 745257538089 is 980835752547.

The square root of 745257538089 is 863283.

It is a perfect power (a square), and thus also a powerful number.

745257538089 is a `hidden beast` number, since 7 + 4 + 52 + 575 + 3 + 8 + 0 + 8 + 9 = 666.

It is not a de Polignac number, because 745257538089 - 2²⁹ = 744720667177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (745257538009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 214955734 + ... + 214959200.

Almost surely, 2^745257538089 is an apocalyptic number.

745257538089 is the 863283-rd square number.

745257538089 is the 431642-nd centered octagonal number.

It is an amenable number.

745257538089 is a deficient number, since it is larger than the sum of its proper divisors (344665880404).

745257538089 is an frugal number, since it uses more digits than its factorization.

745257538089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106 (or 3553 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 63.

The spelling of 745257538089 in words is "seven hundred forty-five billion, two hundred fifty-seven million, five hundred thirty-eight thousand, eighty-nine".