1634465307857 has 2 divisors, whose sum is σ = 1634465307858. Its totient is φ = 1634465307856.

The previous prime is 1634465307847. The next prime is 1634465307941. The reversal of 1634465307857 is 7587035644361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1127750545936 + 506714761921 = 1061956^2 + 711839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1634465307857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1634465307796 and 1634465307805.

It is not a weakly prime, because it can be changed into another prime (1634465307817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817232653928 + 817232653929.

It is an arithmetic number, because the mean of its divisors is an integer number (817232653929).

Almost surely, 2^{1634465307857} is an apocalyptic number.

It is an amenable number.

1634465307857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634465307857 is an equidigital number, since it uses as much as digits as its factorization.

1634465307857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 59.

The spelling of 1634465307857 in words is "one trillion, six hundred thirty-four billion, four hundred sixty-five million, three hundred seven thousand, eight hundred fifty-seven".