36981866 has 16 divisors (see below), whose sum is σ = 58514400. Its totient is φ = 17481168.

The previous prime is 36981827. The next prime is 36981887. The reversal of 36981866 is 66818963.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 36981866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28745 + ... + 30003.

It is an arithmetic number, because the mean of its divisors is an integer number (3657150).

Almost surely, 2^36981866 is an apocalyptic number.

36981866 is a deficient number, since it is larger than the sum of its proper divisors (21532534).

36981866 is a wasteful number, since it uses less digits than its factorization.

36981866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its digits is 373248, while the sum is 47.

The square root of 36981866 is about 6081.2717419961. The cubic root of 36981866 is about 333.1677379704.

The spelling of 36981866 in words is "thirty-six million, nine hundred eighty-one thousand, eight hundred sixty-six".