1648613701337 has 2 divisors, whose sum is σ = 1648613701338. Its totient is φ = 1648613701336.

The previous prime is 1648613701261. The next prime is 1648613701373. The reversal of 1648613701337 is 7331073168461.

It is a happy number.

Together with next prime (1648613701373) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368874260121 + 279739441216 = 1169989^2 + 528904^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648613701337 - 2²⁰ = 1648612652761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648613701037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824306850668 + 824306850669.

It is an arithmetic number, because the mean of its divisors is an integer number (824306850669).

Almost surely, 2^{1648613701337} is an apocalyptic number.

It is an amenable number.

1648613701337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648613701337 is an equidigital number, since it uses as much as digits as its factorization.

1648613701337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 50.

Adding to 1648613701337 its reverse (7331073168461), we get a palindrome (8979686869798).

The spelling of 1648613701337 in words is "one trillion, six hundred forty-eight billion, six hundred thirteen million, seven hundred one thousand, three hundred thirty-seven".