1964558057947 has 2 divisors, whose sum is σ = 1964558057948. Its totient is φ = 1964558057946.

The previous prime is 1964558057933. The next prime is 1964558058061. The reversal of 1964558057947 is 7497508554691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1964558057947 - 2¹⁵ = 1964558025179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1964558057647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982279028973 + 982279028974.

It is an arithmetic number, because the mean of its divisors is an integer number (982279028974).

Almost surely, 2^{1964558057947} is an apocalyptic number.

1964558057947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964558057947 is an equidigital number, since it uses as much as digits as its factorization.

1964558057947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024000, while the sum is 70.

The spelling of 1964558057947 in words is "one trillion, nine hundred sixty-four billion, five hundred fifty-eight million, fifty-seven thousand, nine hundred forty-seven".