748148909 has 2 divisors, whose sum is σ = 748148910. Its totient is φ = 748148908.

The previous prime is 748148897. The next prime is 748148941. The reversal of 748148909 is 909841847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 746655625 + 1493284 = 27325^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 748148909 - 2⁴ = 748148893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (748141909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374074454 + 374074455.

It is an arithmetic number, because the mean of its divisors is an integer number (374074455).

Almost surely, 2^748148909 is an apocalyptic number.

It is an amenable number.

748148909 is a deficient number, since it is larger than the sum of its proper divisors (1).

748148909 is an equidigital number, since it uses as much as digits as its factorization.

748148909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 748148909 is about 27352.3108530157. The cubic root of 748148909 is about 907.8122015984.

The spelling of 748148909 in words is "seven hundred forty-eight million, one hundred forty-eight thousand, nine hundred nine".