1646997594103 has 2 divisors, whose sum is σ = 1646997594104. Its totient is φ = 1646997594102.

The previous prime is 1646997594097. The next prime is 1646997594149. The reversal of 1646997594103 is 3014957996461.

It is a weak prime.

It is an emirp because it is prime and its reverse (3014957996461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1646997594103 - 2³⁷ = 1509558640631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1646997591103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 823498797051 + 823498797052.

It is an arithmetic number, because the mean of its divisors is an integer number (823498797052).

Almost surely, 2^{1646997594103} is an apocalyptic number.

1646997594103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1646997594103 is an equidigital number, since it uses as much as digits as its factorization.

1646997594103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 1646997594103 in words is "one trillion, six hundred forty-six billion, nine hundred ninety-seven million, five hundred ninety-four thousand, one hundred three".