1963890255337 has 2 divisors, whose sum is σ = 1963890255338. Its totient is φ = 1963890255336.

The previous prime is 1963890255317. The next prime is 1963890255367. The reversal of 1963890255337 is 7335520983691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1748077978201 + 215812277136 = 1322149^2 + 464556^2 .

It is an emirp because it is prime and its reverse (7335520983691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1963890255337 - 2³⁹ = 1414134441449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1963890255317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981945127668 + 981945127669.

It is an arithmetic number, because the mean of its divisors is an integer number (981945127669).

Almost surely, 2^{1963890255337} is an apocalyptic number.

It is an amenable number.

1963890255337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963890255337 is an equidigital number, since it uses as much as digits as its factorization.

1963890255337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 1963890255337 in words is "one trillion, nine hundred sixty-three billion, eight hundred ninety million, two hundred fifty-five thousand, three hundred thirty-seven".