8181135 has 16 divisors (see below), whose sum is σ = 14544480. Its totient is φ = 4363200.

The previous prime is 8181127. The next prime is 8181139. The reversal of 8181135 is 5311818.

It is not a de Polignac number, because 8181135 - 2³ = 8181127 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 8181099 and 8181108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8181139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30166 + ... + 30435.

It is an arithmetic number, because the mean of its divisors is an integer number (909030).

Almost surely, 2^8181135 is an apocalyptic number.

8181135 is a deficient number, since it is larger than the sum of its proper divisors (6363345).

8181135 is a wasteful number, since it uses less digits than its factorization.

8181135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60615 (or 60609 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 8181135 is about 2860.2683440545. The cubic root of 8181135 is about 201.4982071852.

It can be divided in two parts, 818 and 1135, that added together give a triangular number (1953 = T₆₂).

The spelling of 8181135 in words is "eight million, one hundred eighty-one thousand, one hundred thirty-five".