748842397931 has 4 divisors (see below), whose sum is σ = 748844452032. Its totient is φ = 748840343832.

The previous prime is 748842397907. The next prime is 748842397949. The reversal of 748842397931 is 139793248847.

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 748842397931 - 2¹⁸ = 748842135787 is a prime.

It is a super-2 number, since 2×748842397931² (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 (748842397981) 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, 316220 + ... + 1263993.

It is an arithmetic number, because the mean of its divisors is an integer number (187211113008).

Almost surely, 2^748842397931 is an apocalyptic number.

748842397931 is a deficient number, since it is larger than the sum of its proper divisors (2054101).

748842397931 is a wasteful number, since it uses less digits than its factorization.

748842397931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054100.

The product of its digits is 73156608, while the sum is 65.

The spelling of 748842397931 in words is "seven hundred forty-eight billion, eight hundred forty-two million, three hundred ninety-seven thousand, nine hundred thirty-one".