162109187 has 2 divisors, whose sum is σ = 162109188. Its totient is φ = 162109186.

The previous prime is 162109177. The next prime is 162109193. The reversal of 162109187 is 781901261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162109187 - 2²⁰ = 161060611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162109177) 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, 81054593 + 81054594.

It is an arithmetic number, because the mean of its divisors is an integer number (81054594).

Almost surely, 2^162109187 is an apocalyptic number.

162109187 is a deficient number, since it is larger than the sum of its proper divisors (1).

162109187 is an equidigital number, since it uses as much as digits as its factorization.

162109187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 162109187 is about 12732.2106093168. The cubic root of 162109187 is about 545.2586231509.

The spelling of 162109187 in words is "one hundred sixty-two million, one hundred nine thousand, one hundred eighty-seven".