385454829493 has 4 divisors (see below), whose sum is σ = 385478567500. Its totient is φ = 385431091488.

The previous prime is 385454829481. The next prime is 385454829499. The reversal of 385454829493 is 394928454583.

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 133412676049 + 252042153444 = 365257^2 + 502038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385454829493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385454829499) 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, 11844630 + ... + 11877127.

It is an arithmetic number, because the mean of its divisors is an integer number (96369641875).

Almost surely, 2^385454829493 is an apocalyptic number.

It is an amenable number.

385454829493 is a deficient number, since it is larger than the sum of its proper divisors (23738007).

385454829493 is a wasteful number, since it uses less digits than its factorization.

385454829493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23738006.

The product of its digits is 149299200, while the sum is 64.

The spelling of 385454829493 in words is "three hundred eighty-five billion, four hundred fifty-four million, eight hundred twenty-nine thousand, four hundred ninety-three".