162166973 has 2 divisors, whose sum is σ = 162166974. Its totient is φ = 162166972.

The previous prime is 162166937. The next prime is 162166999. The reversal of 162166973 is 379661261.

Together with previous prime (162166937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104816644 + 57350329 = 10238^2 + 7573^2 .

It is a cyclic number.

It is not a de Polignac number, because 162166973 - 2¹⁸ = 161904829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162166973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162166573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81083486 + 81083487.

It is an arithmetic number, because the mean of its divisors is an integer number (81083487).

Almost surely, 2^162166973 is an apocalyptic number.

It is an amenable number.

162166973 is a deficient number, since it is larger than the sum of its proper divisors (1).

162166973 is an equidigital number, since it uses as much as digits as its factorization.

162166973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 162166973 is about 12734.4796909807. The cubic root of 162166973 is about 545.3234037108.

The spelling of 162166973 in words is "one hundred sixty-two million, one hundred sixty-six thousand, nine hundred seventy-three".