749017173853 has 4 divisors (see below), whose sum is σ = 806633879548. Its totient is φ = 691400468160.

The previous prime is 749017173847. The next prime is 749017173857. The reversal of 749017173853 is 358371710947.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38346255684 + 710670918169 = 195822^2 + 843013^2 .

It is a cyclic number.

It is not a de Polignac number, because 749017173853 - 2³³ = 740427239261 is a prime.

It is a super-2 number, since 2×749017173853² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749017173794 and 749017173803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749017173857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28808352828 + ... + 28808352853.

It is an arithmetic number, because the mean of its divisors is an integer number (201658469887).

Almost surely, 2^749017173853 is an apocalyptic number.

It is an amenable number.

749017173853 is a deficient number, since it is larger than the sum of its proper divisors (57616705695).

749017173853 is a wasteful number, since it uses less digits than its factorization.

749017173853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57616705694.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 749017173853 in words is "seven hundred forty-nine billion, seventeen million, one hundred seventy-three thousand, eight hundred fifty-three".