1648145474513 has 2 divisors, whose sum is σ = 1648145474514. Its totient is φ = 1648145474512.

The previous prime is 1648145474461. The next prime is 1648145474567. The reversal of 1648145474513 is 3154745418461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1187278282129 + 460867192384 = 1089623^2 + 678872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648145474513 - 2⁶ = 1648145474449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1648145477513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824072737256 + 824072737257.

It is an arithmetic number, because the mean of its divisors is an integer number (824072737257).

Almost surely, 2^{1648145474513} is an apocalyptic number.

It is an amenable number.

1648145474513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648145474513 is an equidigital number, since it uses as much as digits as its factorization.

1648145474513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6451200, while the sum is 53.

The spelling of 1648145474513 in words is "one trillion, six hundred forty-eight billion, one hundred forty-five million, four hundred seventy-four thousand, five hundred thirteen".