813572134 has 8 divisors (see below), whose sum is σ = 1284587640. Its totient is φ = 385376256.

The previous prime is 813572113. The next prime is 813572141. The reversal of 813572134 is 431275318.

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

It is a super-4 number, since 4×813572134⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813572134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10704859 + ... + 10704934.

It is an arithmetic number, because the mean of its divisors is an integer number (160573455).

Almost surely, 2^813572134 is an apocalyptic number.

813572134 is a deficient number, since it is larger than the sum of its proper divisors (471015506).

813572134 is a wasteful number, since it uses less digits than its factorization.

813572134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409814.

The product of its digits is 20160, while the sum is 34.

The square root of 813572134 is about 28523.1859019991. The cubic root of 813572134 is about 933.5380449208.

The spelling of 813572134 in words is "eight hundred thirteen million, five hundred seventy-two thousand, one hundred thirty-four".