162159973 has 2 divisors, whose sum is σ = 162159974. Its totient is φ = 162159972.

The previous prime is 162159887. The next prime is 162160013. The reversal of 162159973 is 379951261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95296644 + 66863329 = 9762^2 + 8177^2 .

It is a cyclic number.

It is not a de Polignac number, because 162159973 - 2⁹ = 162159461 is a prime.

It is equal to p_9088666 and since 162159973 and 9088666 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162159773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81079986 + 81079987.

It is an arithmetic number, because the mean of its divisors is an integer number (81079987).

Almost surely, 2^162159973 is an apocalyptic number.

It is an amenable number.

162159973 is a deficient number, since it is larger than the sum of its proper divisors (1).

162159973 is an equidigital number, since it uses as much as digits as its factorization.

162159973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 43.

The square root of 162159973 is about 12734.2048436485. The cubic root of 162159973 is about 545.3155572328.

The spelling of 162159973 in words is "one hundred sixty-two million, one hundred fifty-nine thousand, nine hundred seventy-three".