745209513 has 12 divisors (see below), whose sum is σ = 1077791728. Its totient is φ = 496170360.

The previous prime is 745209473. The next prime is 745209533. The reversal of 745209513 is 315902547.

It is not a de Polignac number, because 745209513 - 2¹³ = 745201321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745209533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45523 + ... + 59688.

Almost surely, 2^745209513 is an apocalyptic number.

It is an amenable number.

745209513 is a deficient number, since it is larger than the sum of its proper divisors (332582215).

745209513 is a wasteful number, since it uses less digits than its factorization.

745209513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106004 (or 106001 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 745209513 is about 27298.5258393196. The cubic root of 745209513 is about 906.6217425808.

The spelling of 745209513 in words is "seven hundred forty-five million, two hundred nine thousand, five hundred thirteen".