813125269389 has 8 divisors (see below), whose sum is σ = 1101940256032. Its totient is φ = 533196897840.

The previous prime is 813125269387. The next prime is 813125269403. The reversal of 813125269389 is 983962521318.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 813125269389 - 2¹ = 813125269387 is a prime.

It is a super-2 number, since 2×813125269389² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813125269387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221653559 + ... + 2221653924.

It is an arithmetic number, because the mean of its divisors is an integer number (137742532004).

Almost surely, 2^813125269389 is an apocalyptic number.

It is an amenable number.

813125269389 is a deficient number, since it is larger than the sum of its proper divisors (288814986643).

813125269389 is a wasteful number, since it uses less digits than its factorization.

813125269389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443307547.

The product of its digits is 5598720, while the sum is 57.

The spelling of 813125269389 in words is "eight hundred thirteen billion, one hundred twenty-five million, two hundred sixty-nine thousand, three hundred eighty-nine".