368135581 has 16 divisors (see below), whose sum is σ = 406788480. Its totient is φ = 330373120.

The previous prime is 368135557. The next prime is 368135609. The reversal of 368135581 is 185531863.

It is not a de Polignac number, because 368135581 - 2⁹ = 368135069 is a prime.

It is a super-2 number, since 2×368135581² = 271047611996415122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368135531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438360 + ... + 439198.

It is an arithmetic number, because the mean of its divisors is an integer number (25424280).

Almost surely, 2^368135581 is an apocalyptic number.

It is an amenable number.

368135581 is a deficient number, since it is larger than the sum of its proper divisors (38652899).

368135581 is a wasteful number, since it uses less digits than its factorization.

368135581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its digits is 86400, while the sum is 40.

The square root of 368135581 is about 19186.8595919186. The cubic root of 368135581 is about 716.6975694144.

The spelling of 368135581 in words is "three hundred sixty-eight million, one hundred thirty-five thousand, five hundred eighty-one".