1946443815161 has 2 divisors, whose sum is σ = 1946443815162. Its totient is φ = 1946443815160.

The previous prime is 1946443815143. The next prime is 1946443815167. The reversal of 1946443815161 is 1615183446491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1220848206400 + 725595608761 = 1104920^2 + 851819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946443815161 - 2⁶ = 1946443815097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1946443815167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973221907580 + 973221907581.

It is an arithmetic number, because the mean of its divisors is an integer number (973221907581).

Almost surely, 2^{1946443815161} is an apocalyptic number.

It is an amenable number.

1946443815161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946443815161 is an equidigital number, since it uses as much as digits as its factorization.

1946443815161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The spelling of 1946443815161 in words is "one trillion, nine hundred forty-six billion, four hundred forty-three million, eight hundred fifteen thousand, one hundred sixty-one".