1813544134 has 4 divisors (see below), whose sum is σ = 2720316204. Its totient is φ = 906772066.

The previous prime is 1813544123. The next prime is 1813544149. The reversal of 1813544134 is 4314453181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4314453181 = 53 ⋅81404777.

It is a self number, because there is not a number n which added to its sum of digits gives 1813544134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453386032 + ... + 453386035.

It is an arithmetic number, because the mean of its divisors is an integer number (680079051).

Almost surely, 2^1813544134 is an apocalyptic number.

1813544134 is a deficient number, since it is larger than the sum of its proper divisors (906772070).

1813544134 is an equidigital number, since it uses as much as digits as its factorization.

1813544134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906772069.

The product of its digits is 23040, while the sum is 34.

The square root of 1813544134 is about 42585.7268811981. The cubic root of 1813544134 is about 1219.4838213217.

The spelling of 1813544134 in words is "one billion, eight hundred thirteen million, five hundred forty-four thousand, one hundred thirty-four".