36818681 has 4 divisors (see below), whose sum is σ = 36921600. Its totient is φ = 36715764.

The previous prime is 36818671. The next prime is 36818693. The reversal of 36818681 is 18681863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36818681 - 2¹⁰ = 36817657 is a prime.

It is a super-2 number, since 2×36818681² = 2711230541159522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36818671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50921 + ... + 51638.

It is an arithmetic number, because the mean of its divisors is an integer number (9230400).

Almost surely, 2^36818681 is an apocalyptic number.

It is an amenable number.

36818681 is a deficient number, since it is larger than the sum of its proper divisors (102919).

36818681 is a wasteful number, since it uses less digits than its factorization.

36818681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102918.

The product of its digits is 55296, while the sum is 41.

The square root of 36818681 is about 6067.8398957125. The cubic root of 36818681 is about 332.6769736464.

The spelling of 36818681 in words is "thirty-six million, eight hundred eighteen thousand, six hundred eighty-one".