743581049 has 2 divisors, whose sum is σ = 743581050. Its totient is φ = 743581048.

The previous prime is 743581039. The next prime is 743581051. The reversal of 743581049 is 940185347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 702621049 + 40960000 = 26507^2 + 6400^2 .

It is an emirp because it is prime and its reverse (940185347) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-743581049 is a prime.

Together with 743581051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 743580997 and 743581015.

It is not a weakly prime, because it can be changed into another prime (743581039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371790524 + 371790525.

It is an arithmetic number, because the mean of its divisors is an integer number (371790525).

Almost surely, 2^743581049 is an apocalyptic number.

It is an amenable number.

743581049 is a deficient number, since it is larger than the sum of its proper divisors (1).

743581049 is an equidigital number, since it uses as much as digits as its factorization.

743581049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 743581049 is about 27268.6825681037. The cubic root of 743581049 is about 905.9608646296.

The spelling of 743581049 in words is "seven hundred forty-three million, five hundred eighty-one thousand, forty-nine".