1355819161 has 2 divisors, whose sum is σ = 1355819162. Its totient is φ = 1355819160.

The previous prime is 1355819137. The next prime is 1355819183. The reversal of 1355819161 is 1619185531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1095610000 + 260209161 = 33100^2 + 16131^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355819161 - 2⁷ = 1355819033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355819191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677909580 + 677909581.

It is an arithmetic number, because the mean of its divisors is an integer number (677909581).

Almost surely, 2^1355819161 is an apocalyptic number.

It is an amenable number.

1355819161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355819161 is an equidigital number, since it uses as much as digits as its factorization.

1355819161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 40.

The square root of 1355819161 is about 36821.4497406064. The cubic root of 1355819161 is about 1106.7951713146.

The spelling of 1355819161 in words is "one billion, three hundred fifty-five million, eight hundred nineteen thousand, one hundred sixty-one".