1813814135 has 36 divisors (see below), whose sum is σ = 2622553128. Its totient is φ = 1200733632.

The previous prime is 1813814117. The next prime is 1813814141. The reversal of 1813814135 is 5314183181.

It is not a de Polignac number, because 1813814135 - 2¹⁸ = 1813551991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1813814095 and 1813814104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 201644 + ... + 210446.

It is an arithmetic number, because the mean of its divisors is an integer number (72848698).

Almost surely, 2^1813814135 is an apocalyptic number.

1813814135 is a deficient number, since it is larger than the sum of its proper divisors (808738993).

1813814135 is an equidigital number, since it uses as much as digits as its factorization.

1813814135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880 (or 8844 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 1813814135 is about 42588.8968511747. The cubic root of 1813814135 is about 1219.5443373588.

The spelling of 1813814135 in words is "one billion, eight hundred thirteen million, eight hundred fourteen thousand, one hundred thirty-five".