1615064161 has 2 divisors, whose sum is σ = 1615064162. Its totient is φ = 1615064160.

The previous prime is 1615064153. The next prime is 1615064167. The reversal of 1615064161 is 1614605161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1336341136 + 278723025 = 36556^2 + 16695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1615064161 - 2³ = 1615064153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1615064167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807532080 + 807532081.

It is an arithmetic number, because the mean of its divisors is an integer number (807532081).

Almost surely, 2^1615064161 is an apocalyptic number.

It is an amenable number.

1615064161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615064161 is an equidigital number, since it uses as much as digits as its factorization.

1615064161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1615064161 is about 40187.8608661869. The cubic root of 1615064161 is about 1173.2662914644.

The spelling of 1615064161 in words is "one billion, six hundred fifteen million, sixty-four thousand, one hundred sixty-one".