1595523161 has 2 divisors, whose sum is σ = 1595523162. Its totient is φ = 1595523160.

The previous prime is 1595523101. The next prime is 1595523169. The reversal of 1595523161 is 1613255951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1595523136 + 25 = 39944^2 + 5^2 .

It is an emirp because it is prime and its reverse (1613255951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1595523161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1595523169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797761580 + 797761581.

It is an arithmetic number, because the mean of its divisors is an integer number (797761581).

Almost surely, 2^1595523161 is an apocalyptic number.

1595523161 is the 17864-th centered decagonal number.

It is an amenable number.

1595523161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1595523161 is an equidigital number, since it uses as much as digits as its factorization.

1595523161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 38.

The square root of 1595523161 is about 39944.0003129381. Note that the first 3 decimals coincide. The cubic root of 1595523161 is about 1168.5152132263.

The spelling of 1595523161 in words is "one billion, five hundred ninety-five million, five hundred twenty-three thousand, one hundred sixty-one".