1813134139 has 8 divisors (see below), whose sum is σ = 1824662160. Its totient is φ = 1801622016.

The previous prime is 1813134131. The next prime is 1813134157. The reversal of 1813134139 is 9314313181.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1813134139 - 2³ = 1813134131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1813134131) 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, 293547 + ... + 299659.

It is an arithmetic number, because the mean of its divisors is an integer number (228082770).

Almost surely, 2^1813134139 is an apocalyptic number.

1813134139 is a deficient number, since it is larger than the sum of its proper divisors (11528021).

1813134139 is a wasteful number, since it uses less digits than its factorization.

1813134139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949.

The product of its digits is 7776, while the sum is 34.

The square root of 1813134139 is about 42580.9128483643. The cubic root of 1813134139 is about 1219.3919165733.

The spelling of 1813134139 in words is "one billion, eight hundred thirteen million, one hundred thirty-four thousand, one hundred thirty-nine".