1648494945401 has 2 divisors, whose sum is σ = 1648494945402. Its totient is φ = 1648494945400.

The previous prime is 1648494945353. The next prime is 1648494945407. The reversal of 1648494945401 is 1045494948461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1227619680400 + 420875265001 = 1107980^2 + 648749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648494945401 - 2⁶ = 1648494945337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648494945407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824247472700 + 824247472701.

It is an arithmetic number, because the mean of its divisors is an integer number (824247472701).

Almost surely, 2^{1648494945401} is an apocalyptic number.

It is an amenable number.

1648494945401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648494945401 is an equidigital number, since it uses as much as digits as its factorization.

1648494945401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 59.

The spelling of 1648494945401 in words is "one trillion, six hundred forty-eight billion, four hundred ninety-four million, nine hundred forty-five thousand, four hundred one".