745338749 has 2 divisors, whose sum is σ = 745338750. Its totient is φ = 745338748.

The previous prime is 745338739. The next prime is 745338757. The reversal of 745338749 is 947833547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498628900 + 246709849 = 22330^2 + 15707^2 .

It is a cyclic number.

It is not a de Polignac number, because 745338749 - 2⁴ = 745338733 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 745338697 and 745338706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745338719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372669374 + 372669375.

It is an arithmetic number, because the mean of its divisors is an integer number (372669375).

Almost surely, 2^745338749 is an apocalyptic number.

It is an amenable number.

745338749 is a deficient number, since it is larger than the sum of its proper divisors (1).

745338749 is an equidigital number, since it uses as much as digits as its factorization.

745338749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 50.

The square root of 745338749 is about 27300.8928242283. The cubic root of 745338749 is about 906.6741490486.

The spelling of 745338749 in words is "seven hundred forty-five million, three hundred thirty-eight thousand, seven hundred forty-nine".