162909947 has 2 divisors, whose sum is σ = 162909948. Its totient is φ = 162909946.

The previous prime is 162909937. The next prime is 162909959. The reversal of 162909947 is 749909261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162909947 - 2⁴ = 162909931 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162909937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81454973 + 81454974.

It is an arithmetic number, because the mean of its divisors is an integer number (81454974).

Almost surely, 2^162909947 is an apocalyptic number.

162909947 is a deficient number, since it is larger than the sum of its proper divisors (1).

162909947 is an equidigital number, since it uses as much as digits as its factorization.

162909947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 162909947 is about 12763.6180998963. The cubic root of 162909947 is about 546.1549415585.

The spelling of 162909947 in words is "one hundred sixty-two million, nine hundred nine thousand, nine hundred forty-seven".