36437734649 has 2 divisors, whose sum is σ = 36437734650. Its totient is φ = 36437734648.

The previous prime is 36437734639. The next prime is 36437734673. The reversal of 36437734649 is 94643773463.

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., 32358613225 + 4079121424 = 179885^2 + 63868^2 .

It is an emirp because it is prime and its reverse (94643773463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36437734649 - 2²⁸ = 36169299193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36437734594 and 36437734603.

It is not a weakly prime, because it can be changed into another prime (36437734639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18218867324 + 18218867325.

It is an arithmetic number, because the mean of its divisors is an integer number (18218867325).

Almost surely, 2^36437734649 is an apocalyptic number.

It is an amenable number.

36437734649 is a deficient number, since it is larger than the sum of its proper divisors (1).

36437734649 is an equidigital number, since it uses as much as digits as its factorization.

36437734649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 56.

The spelling of 36437734649 in words is "thirty-six billion, four hundred thirty-seven million, seven hundred thirty-four thousand, six hundred forty-nine".