1964226093961 has 2 divisors, whose sum is σ = 1964226093962. Its totient is φ = 1964226093960.

The previous prime is 1964226093881. The next prime is 1964226094007. The reversal of 1964226093961 is 1693906224691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1583240876361 + 380985217600 = 1258269^2 + 617240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964226093961 - 2⁷ = 1964226093833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1964226093896 and 1964226093905.

It is not a weakly prime, because it can be changed into another prime (1964226093461) 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, 982113046980 + 982113046981.

It is an arithmetic number, because the mean of its divisors is an integer number (982113046981).

Almost surely, 2^{1964226093961} is an apocalyptic number.

It is an amenable number.

1964226093961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964226093961 is an equidigital number, since it uses as much as digits as its factorization.

1964226093961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 1964226093961 in words is "one trillion, nine hundred sixty-four billion, two hundred twenty-six million, ninety-three thousand, nine hundred sixty-one".