162421673 has 2 divisors, whose sum is σ = 162421674. Its totient is φ = 162421672.

The previous prime is 162421661. The next prime is 162421691. The reversal of 162421673 is 376124261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115197289 + 47224384 = 10733^2 + 6872^2 .

It is an emirp because it is prime and its reverse (376124261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162421673 - 2⁴ = 162421657 is a prime.

It is not a weakly prime, because it can be changed into another prime (162421643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81210836 + 81210837.

It is an arithmetic number, because the mean of its divisors is an integer number (81210837).

Almost surely, 2^162421673 is an apocalyptic number.

It is an amenable number.

162421673 is a deficient number, since it is larger than the sum of its proper divisors (1).

162421673 is an equidigital number, since it uses as much as digits as its factorization.

162421673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 162421673 is about 12744.4761759752. The cubic root of 162421673 is about 545.6087499725.

The spelling of 162421673 in words is "one hundred sixty-two million, four hundred twenty-one thousand, six hundred seventy-three".