162378109 has 2 divisors, whose sum is σ = 162378110. Its totient is φ = 162378108.

The previous prime is 162378079. The next prime is 162378127. The reversal of 162378109 is 901873261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 45522009 = 10810^2 + 6747^2 .

It is a cyclic number.

It is not a de Polignac number, because 162378109 - 2¹⁵ = 162345341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162378149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81189054 + 81189055.

It is an arithmetic number, because the mean of its divisors is an integer number (81189055).

Almost surely, 2^162378109 is an apocalyptic number.

It is an amenable number.

162378109 is a deficient number, since it is larger than the sum of its proper divisors (1).

162378109 is an equidigital number, since it uses as much as digits as its factorization.

162378109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 162378109 is about 12742.7669287326. The cubic root of 162378109 is about 545.5599653809.

The spelling of 162378109 in words is "one hundred sixty-two million, three hundred seventy-eight thousand, one hundred nine".