36181836 has 96 divisors (see below), whose sum is σ = 98703360. Its totient is φ = 11448000.

The previous prime is 36181823. The next prime is 36181853. The reversal of 36181836 is 63818163.

36181836 is a `hidden beast` number, since 3 + 618 + 1 + 8 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 36181836.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338095 + ... + 338201.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160).

Almost surely, 2^36181836 is an apocalyptic number.

36181836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36181836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49351680).

36181836 is an abundant number, since it is smaller than the sum of its proper divisors (62521524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36181836 is a wasteful number, since it uses less digits than its factorization.

36181836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 244 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 36181836 is about 6015.1339137213. The cubic root of 36181836 is about 330.7477259833.

Adding to 36181836 its reverse (63818163), we get a palindrome (99999999).

The spelling of 36181836 in words is "thirty-six million, one hundred eighty-one thousand, eight hundred thirty-six".