745246849 has 2 divisors, whose sum is σ = 745246850. Its totient is φ = 745246848.

The previous prime is 745246813. The next prime is 745246883. The reversal of 745246849 is 948642547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743543824 + 1703025 = 27268^2 + 1305^2 .

It is an emirp because it is prime and its reverse (948642547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745246849 - 2⁷ = 745246721 is a prime.

It is not a weakly prime, because it can be changed into another prime (745246049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372623424 + 372623425.

It is an arithmetic number, because the mean of its divisors is an integer number (372623425).

Almost surely, 2^745246849 is an apocalyptic number.

It is an amenable number.

745246849 is a deficient number, since it is larger than the sum of its proper divisors (1).

745246849 is an equidigital number, since it uses as much as digits as its factorization.

745246849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 49.

The square root of 745246849 is about 27299.2096772049. The cubic root of 745246849 is about 906.6368833180.

The spelling of 745246849 in words is "seven hundred forty-five million, two hundred forty-six thousand, eight hundred forty-nine".