36814781 has 4 divisors (see below), whose sum is σ = 37418364. Its totient is φ = 36211200.

The previous prime is 36814759. The next prime is 36814783. The reversal of 36814781 is 18741863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14100025 + 22714756 = 3755^2 + 4766^2 .

It is a cyclic number.

It is not a de Polignac number, because 36814781 - 2¹⁰ = 36813757 is a prime.

It is a super-2 number, since 2×36814781² = 2710656200155922, 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 (36814783) 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, 301700 + ... + 301821.

It is an arithmetic number, because the mean of its divisors is an integer number (9354591).

Almost surely, 2^36814781 is an apocalyptic number.

It is an amenable number.

36814781 is a deficient number, since it is larger than the sum of its proper divisors (603583).

36814781 is an equidigital number, since it uses as much as digits as its factorization.

36814781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603582.

The product of its digits is 32256, while the sum is 38.

The square root of 36814781 is about 6067.5185207793. The cubic root of 36814781 is about 332.6652270187.

The spelling of 36814781 in words is "thirty-six million, eight hundred fourteen thousand, seven hundred eighty-one".