36779949893 has 2 divisors, whose sum is σ = 36779949894. Its totient is φ = 36779949892.

The previous prime is 36779949887. The next prime is 36779949917. The reversal of 36779949893 is 39894997763.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29583312004 + 7196637889 = 171998^2 + 84833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36779949893 is a prime.

It is a super-2 number, since 2×36779949893² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36779949893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36779949793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18389974946 + 18389974947.

It is an arithmetic number, because the mean of its divisors is an integer number (18389974947).

Almost surely, 2^36779949893 is an apocalyptic number.

It is an amenable number.

36779949893 is a deficient number, since it is larger than the sum of its proper divisors (1).

36779949893 is an equidigital number, since it uses as much as digits as its factorization.

36779949893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555532992, while the sum is 74.

The spelling of 36779949893 in words is "thirty-six billion, seven hundred seventy-nine million, nine hundred forty-nine thousand, eight hundred ninety-three".