1641790380163 has 4 divisors (see below), whose sum is σ = 1650962393640. Its totient is φ = 1632618366688.

The previous prime is 1641790380161. The next prime is 1641790380179. The reversal of 1641790380163 is 3610830971461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1641790380163 - 2¹ = 1641790380161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641790380161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4586006470 + ... + 4586006827.

It is an arithmetic number, because the mean of its divisors is an integer number (412740598410).

Almost surely, 2^{1641790380163} is an apocalyptic number.

1641790380163 is a deficient number, since it is larger than the sum of its proper divisors (9172013477).

1641790380163 is an equidigital number, since it uses as much as digits as its factorization.

1641790380163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172013476.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 1641790380163 in words is "one trillion, six hundred forty-one billion, seven hundred ninety million, three hundred eighty thousand, one hundred sixty-three".