36896381 has 4 divisors (see below), whose sum is σ = 38168700. Its totient is φ = 35624064.

The previous prime is 36896371. The next prime is 36896407. The reversal of 36896381 is 18369863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18369863 = 1229 ⋅14947.

It can be written as a sum of positive squares in 2 ways, for example, as 16736281 + 20160100 = 4091^2 + 4490^2 .

It is a de Polignac number, because none of the positive numbers 2^k-36896381 is a prime.

It is a super-2 number, since 2×36896381² = 2722685861794322, 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 (36896311) 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 3 ways as a sum of consecutive naturals, for example, 636116 + ... + 636173.

It is an arithmetic number, because the mean of its divisors is an integer number (9542175).

Almost surely, 2^36896381 is an apocalyptic number.

It is an amenable number.

36896381 is a deficient number, since it is larger than the sum of its proper divisors (1272319).

36896381 is a wasteful number, since it uses less digits than its factorization.

36896381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272318.

The product of its digits is 186624, while the sum is 44.

The square root of 36896381 is about 6074.2391293066. The cubic root of 36896381 is about 332.9108299211.

The spelling of 36896381 in words is "thirty-six million, eight hundred ninety-six thousand, three hundred eighty-one".