1897403950063 has 2 divisors, whose sum is σ = 1897403950064. Its totient is φ = 1897403950062.

The previous prime is 1897403950009. The next prime is 1897403950103. The reversal of 1897403950063 is 3600593047981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1897403950063 - 2¹³ = 1897403941871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1897403949986 and 1897403950013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1897403950363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948701975031 + 948701975032.

It is an arithmetic number, because the mean of its divisors is an integer number (948701975032).

Almost surely, 2^{1897403950063} is an apocalyptic number.

1897403950063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897403950063 is an equidigital number, since it uses as much as digits as its factorization.

1897403950063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 1897403950063 in words is "one trillion, eight hundred ninety-seven billion, four hundred three million, nine hundred fifty thousand, sixty-three".