745772849 has 2 divisors, whose sum is σ = 745772850. Its totient is φ = 745772848.

The previous prime is 745772831. The next prime is 745772873. The reversal of 745772849 is 948277547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522808225 + 222964624 = 22865^2 + 14932^2 .

It is a cyclic number.

It is not a de Polignac number, because 745772849 - 2²⁴ = 728995633 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745772849.

It is not a weakly prime, because it can be changed into another prime (745772809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372886424 + 372886425.

It is an arithmetic number, because the mean of its divisors is an integer number (372886425).

Almost surely, 2^745772849 is an apocalyptic number.

It is an amenable number.

745772849 is a deficient number, since it is larger than the sum of its proper divisors (1).

745772849 is an equidigital number, since it uses as much as digits as its factorization.

745772849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 53.

The square root of 745772849 is about 27308.8419564067. The cubic root of 745772849 is about 906.8501365273.

The spelling of 745772849 in words is "seven hundred forty-five million, seven hundred seventy-two thousand, eight hundred forty-nine".