158663161 has 2 divisors, whose sum is σ = 158663162. Its totient is φ = 158663160.

The previous prime is 158663137. The next prime is 158663171. The reversal of 158663161 is 161366851.

158663161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157653136 + 1010025 = 12556^2 + 1005^2 .

It is a cyclic number.

It is not a de Polignac number, because 158663161 - 2¹⁹ = 158138873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158663161.

It is not a weakly prime, because it can be changed into another prime (158663111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79331580 + 79331581.

It is an arithmetic number, because the mean of its divisors is an integer number (79331581).

Almost surely, 2^158663161 is an apocalyptic number.

It is an amenable number.

158663161 is a deficient number, since it is larger than the sum of its proper divisors (1).

158663161 is an equidigital number, since it uses as much as digits as its factorization.

158663161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 158663161 is about 12596.1565963591. The cubic root of 158663161 is about 541.3673179688.

The spelling of 158663161 in words is "one hundred fifty-eight million, six hundred sixty-three thousand, one hundred sixty-one".