748500509 has 2 divisors, whose sum is σ = 748500510. Its totient is φ = 748500508.

The previous prime is 748500479. The next prime is 748500539. The reversal of 748500509 is 905005847.

It is a balanced prime because it is at equal distance from previous prime (748500479) and next prime (748500539).

It can be written as a sum of positive squares in only one way, i.e., 722265625 + 26234884 = 26875^2 + 5122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-748500509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (748500539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374250254 + 374250255.

It is an arithmetic number, because the mean of its divisors is an integer number (374250255).

Almost surely, 2^748500509 is an apocalyptic number.

It is an amenable number.

748500509 is a deficient number, since it is larger than the sum of its proper divisors (1).

748500509 is an equidigital number, since it uses as much as digits as its factorization.

748500509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 748500509 is about 27358.7373429404. The cubic root of 748500509 is about 907.9543911089.

The spelling of 748500509 in words is "seven hundred forty-eight million, five hundred thousand, five hundred nine".