36181544 has 16 divisors (see below), whose sum is σ = 77532000. Its totient is φ = 15506352.

The previous prime is 36181543. The next prime is 36181577. The reversal of 36181544 is 44518163.

It is a self number, because there is not a number n which added to its sum of digits gives 36181544.

It is not an unprimeable number, because it can be changed into a prime (36181543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322994 + ... + 323105.

It is an arithmetic number, because the mean of its divisors is an integer number (4845750).

Almost surely, 2^36181544 is an apocalyptic number.

It is an amenable number.

36181544 is an abundant number, since it is smaller than the sum of its proper divisors (41350456).

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

36181544 is a wasteful number, since it uses less digits than its factorization.

36181544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646112 (or 646108 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 36181544 is about 6015.1096415610. The cubic root of 36181544 is about 330.7468362312.

The spelling of 36181544 in words is "thirty-six million, one hundred eighty-one thousand, five hundred forty-four".