748610317509 has 4 divisors (see below), whose sum is σ = 998147090016. Its totient is φ = 499073545004.

The previous prime is 748610317501. The next prime is 748610317523. The reversal of 748610317509 is 905713016847.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 905713016847 = 3 ⋅301904338949.

It is a cyclic number.

It is not a de Polignac number, because 748610317509 - 2³ = 748610317501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748610317501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124768386249 + ... + 124768386254.

It is an arithmetic number, because the mean of its divisors is an integer number (249536772504).

Almost surely, 2^748610317509 is an apocalyptic number.

It is an amenable number.

748610317509 is a deficient number, since it is larger than the sum of its proper divisors (249536772507).

748610317509 is a wasteful number, since it uses less digits than its factorization.

748610317509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249536772506.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 748610317509 in words is "seven hundred forty-eight billion, six hundred ten million, three hundred seventeen thousand, five hundred nine".