36181668 has 48 divisors (see below), whose sum is σ = 88583040. Its totient is φ = 11472384.

The previous prime is 36181667. The next prime is 36181687. The reversal of 36181668 is 86618163.

It is a super-2 number, since 2×36181668² = 2618226198524448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36181667) 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, 92818 + ... + 93206.

It is an arithmetic number, because the mean of its divisors is an integer number (1845480).

Almost surely, 2^36181668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36181668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44291520).

36181668 is an abundant number, since it is smaller than the sum of its proper divisors (52401372).

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

36181668 is a wasteful number, since it uses less digits than its factorization.

36181668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 754 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 36181668 is about 6015.1199489287. The cubic root of 36181668 is about 330.7472140717.

The spelling of 36181668 in words is "thirty-six million, one hundred eighty-one thousand, six hundred sixty-eight".