813400134074 has 16 divisors (see below), whose sum is σ = 1344196804896. Its totient is φ = 366066666000.

The previous prime is 813400134023. The next prime is 813400134077. The reversal of 813400134074 is 470431004318.

It is a super-2 number, since 2×813400134074² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813400134077) 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, 183031112 + ... + 183035555.

It is an arithmetic number, because the mean of its divisors is an integer number (84012300306).

Almost surely, 2^813400134074 is an apocalyptic number.

813400134074 is a deficient number, since it is larger than the sum of its proper divisors (530796670822).

813400134074 is a wasteful number, since it uses less digits than its factorization.

813400134074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366066781.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 813400134074 in words is "eight hundred thirteen billion, four hundred million, one hundred thirty-four thousand, seventy-four".