36081181 has 8 divisors (see below), whose sum is σ = 38361600. Its totient is φ = 33860112.

The previous prime is 36081173. The next prime is 36081217. The reversal of 36081181 is 18118063.

36081181 = T₄₉₀₃ + T₄₉₀₄ + T₄₉₀₅.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36081181 - 2³ = 36081173 is a prime.

It is a super-3 number, since 3×36081181³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36081121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13581 + ... + 16018.

It is an arithmetic number, because the mean of its divisors is an integer number (4795200).

Almost surely, 2^36081181 is an apocalyptic number.

36081181 is the 4905-th centered triangular number.

It is an amenable number.

36081181 is a deficient number, since it is larger than the sum of its proper divisors (2280419).

36081181 is a wasteful number, since it uses less digits than its factorization.

36081181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29675.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 36081181 is about 6006.7612737648. The cubic root of 36081181 is about 330.4407364807.

The spelling of 36081181 in words is "thirty-six million, eighty-one thousand, one hundred eighty-one".