745038733 has 2 divisors, whose sum is σ = 745038734. Its totient is φ = 745038732.

The previous prime is 745038709. The next prime is 745038751. The reversal of 745038733 is 337830547.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744034729 + 1004004 = 27277^2 + 1002^2 .

It is an emirp because it is prime and its reverse (337830547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745038733 - 2²¹ = 742941581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745038433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372519366 + 372519367.

It is an arithmetic number, because the mean of its divisors is an integer number (372519367).

Almost surely, 2^745038733 is an apocalyptic number.

It is an amenable number.

745038733 is a deficient number, since it is larger than the sum of its proper divisors (1).

745038733 is an equidigital number, since it uses as much as digits as its factorization.

745038733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 745038733 is about 27295.3976523516. The cubic root of 745038733 is about 906.5524803184.

The spelling of 745038733 in words is "seven hundred forty-five million, thirty-eight thousand, seven hundred thirty-three".