745138045 has 4 divisors (see below), whose sum is σ = 894165660. Its totient is φ = 596110432.

The previous prime is 745138007. The next prime is 745138073. The reversal of 745138045 is 540831547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 414407449 + 330730596 = 20357^2 + 18186^2 .

It is a cyclic number.

It is not a de Polignac number, because 745138045 - 2¹¹ = 745135997 is a prime.

It is a super-2 number, since 2×745138045² = 1110461412212844050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 745137995 and 745138013.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 74513800 + ... + 74513809.

It is an arithmetic number, because the mean of its divisors is an integer number (223541415).

Almost surely, 2^745138045 is an apocalyptic number.

It is an amenable number.

745138045 is a deficient number, since it is larger than the sum of its proper divisors (149027615).

745138045 is a wasteful number, since it uses less digits than its factorization.

745138045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149027614.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 745138045 is about 27297.2167995201. The cubic root of 745138045 is about 906.5927590028.

The spelling of 745138045 in words is "seven hundred forty-five million, one hundred thirty-eight thousand, forty-five".