162181153 has 2 divisors, whose sum is σ = 162181154. Its totient is φ = 162181152.

The previous prime is 162181121. The next prime is 162181171. The reversal of 162181153 is 351181261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156950784 + 5230369 = 12528^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 162181153 - 2⁵ = 162181121 is a prime.

It is not a weakly prime, because it can be changed into another prime (162181193) 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, 81090576 + 81090577.

It is an arithmetic number, because the mean of its divisors is an integer number (81090577).

Almost surely, 2^162181153 is an apocalyptic number.

It is an amenable number.

162181153 is a deficient number, since it is larger than the sum of its proper divisors (1).

162181153 is an equidigital number, since it uses as much as digits as its factorization.

162181153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 162181153 is about 12735.0364349695. The cubic root of 162181153 is about 545.3392977414.

It can be divided in two parts, 16218 and 1153, that added together give a palindrome (17371).

The spelling of 162181153 in words is "one hundred sixty-two million, one hundred eighty-one thousand, one hundred fifty-three".