162549091 has 2 divisors, whose sum is σ = 162549092. Its totient is φ = 162549090.

The previous prime is 162549083. The next prime is 162549113. The reversal of 162549091 is 190945261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162549091 - 2³ = 162549083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162549091.

It is not a weakly prime, because it can be changed into another prime (162549391) 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, 81274545 + 81274546.

It is an arithmetic number, because the mean of its divisors is an integer number (81274546).

Almost surely, 2^162549091 is an apocalyptic number.

162549091 is a deficient number, since it is larger than the sum of its proper divisors (1).

162549091 is an equidigital number, since it uses as much as digits as its factorization.

162549091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 162549091 is about 12749.4741460187. The cubic root of 162549091 is about 545.7513873497.

The spelling of 162549091 in words is "one hundred sixty-two million, five hundred forty-nine thousand, ninety-one".