36144581 has 8 divisors (see below), whose sum is σ = 39742464. Its totient is φ = 32598720.

The previous prime is 36144571. The next prime is 36144583. The reversal of 36144581 is 18544163.

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

It is not a de Polignac number, because 36144581 - 2¹⁸ = 35882437 is a prime.

It is a super-2 number, since 2×36144581² = 2612861471331122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36144583) 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, 11540 + ... + 14333.

It is an arithmetic number, because the mean of its divisors is an integer number (4967808).

Almost surely, 2^36144581 is an apocalyptic number.

It is an amenable number.

36144581 is a deficient number, since it is larger than the sum of its proper divisors (3597883).

36144581 is a wasteful number, since it uses less digits than its factorization.

36144581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26011.

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

The square root of 36144581 is about 6012.0363438689. The cubic root of 36144581 is about 330.6341677317.

The spelling of 36144581 in words is "thirty-six million, one hundred forty-four thousand, five hundred eighty-one".