1649987418847 has 2 divisors, whose sum is σ = 1649987418848. Its totient is φ = 1649987418846.

The previous prime is 1649987418731. The next prime is 1649987418851. The reversal of 1649987418847 is 7488147899461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1649987418847 - 2²⁷ = 1649853201119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1649987418347) 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, 824993709423 + 824993709424.

It is an arithmetic number, because the mean of its divisors is an integer number (824993709424).

Almost surely, 2^{1649987418847} is an apocalyptic number.

1649987418847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1649987418847 is an equidigital number, since it uses as much as digits as its factorization.

1649987418847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 780337152, while the sum is 76.

The spelling of 1649987418847 in words is "one trillion, six hundred forty-nine billion, nine hundred eighty-seven million, four hundred eighteen thousand, eight hundred forty-seven".