731943749 has 2 divisors, whose sum is σ = 731943750. Its totient is φ = 731943748.

The previous prime is 731943733. The next prime is 731943761. The reversal of 731943749 is 947349137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644652100 + 87291649 = 25390^2 + 9343^2 .

It is a cyclic number.

It is not a de Polignac number, because 731943749 - 2⁴ = 731943733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731933749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365971874 + 365971875.

It is an arithmetic number, because the mean of its divisors is an integer number (365971875).

Almost surely, 2^731943749 is an apocalyptic number.

It is an amenable number.

731943749 is a deficient number, since it is larger than the sum of its proper divisors (1).

731943749 is an equidigital number, since it uses as much as digits as its factorization.

731943749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 47.

The square root of 731943749 is about 27054.4589485726. The cubic root of 731943749 is about 901.2097923933.

The spelling of 731943749 in words is "seven hundred thirty-one million, nine hundred forty-three thousand, seven hundred forty-nine".