162172849 has 2 divisors, whose sum is σ = 162172850. Its totient is φ = 162172848.

The previous prime is 162172819. The next prime is 162172853. The reversal of 162172849 is 948271261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159390625 + 2782224 = 12625^2 + 1668^2 .

It is a cyclic number.

It is not a de Polignac number, because 162172849 - 2⁵ = 162172817 is a prime.

It is not a weakly prime, because it can be changed into another prime (162172819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81086424 + 81086425.

It is an arithmetic number, because the mean of its divisors is an integer number (81086425).

Almost surely, 2^162172849 is an apocalyptic number.

It is an amenable number.

162172849 is a deficient number, since it is larger than the sum of its proper divisors (1).

162172849 is an equidigital number, since it uses as much as digits as its factorization.

162172849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 162172849 is about 12734.7104011045. The cubic root of 162172849 is about 545.3299900943.

The spelling of 162172849 in words is "one hundred sixty-two million, one hundred seventy-two thousand, eight hundred forty-nine".