748661749019 has 4 divisors (see below), whose sum is σ = 766921791720. Its totient is φ = 730401706320.

The previous prime is 748661749013. The next prime is 748661749027. The reversal of 748661749019 is 910947166847.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 748661749019 - 2¹² = 748661744923 is a prime.

It is a super-2 number, since 2×748661749019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748661749013) 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, 9130021289 + ... + 9130021370.

It is an arithmetic number, because the mean of its divisors is an integer number (191730447930).

Almost surely, 2^748661749019 is an apocalyptic number.

748661749019 is a deficient number, since it is larger than the sum of its proper divisors (18260042701).

748661749019 is a wasteful number, since it uses less digits than its factorization.

748661749019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18260042700.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 748661749019 in words is "seven hundred forty-eight billion, six hundred sixty-one million, seven hundred forty-nine thousand, nineteen".