162867989 has 2 divisors, whose sum is σ = 162867990. Its totient is φ = 162867988.

The previous prime is 162867979. The next prime is 162867997. The reversal of 162867989 is 989768261.

162867989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162435025 + 432964 = 12745^2 + 658^2 .

It is an emirp because it is prime and its reverse (989768261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162867989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162867959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81433994 + 81433995.

It is an arithmetic number, because the mean of its divisors is an integer number (81433995).

Almost surely, 2^162867989 is an apocalyptic number.

It is an amenable number.

162867989 is a deficient number, since it is larger than the sum of its proper divisors (1).

162867989 is an equidigital number, since it uses as much as digits as its factorization.

162867989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 56.

The square root of 162867989 is about 12761.9743378523. The cubic root of 162867989 is about 546.1080495239.

The spelling of 162867989 in words is "one hundred sixty-two million, eight hundred sixty-seven thousand, nine hundred eighty-nine".