167644849 has 2 divisors, whose sum is σ = 167644850. Its totient is φ = 167644848.

The previous prime is 167644843. The next prime is 167644937. The reversal of 167644849 is 948446761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167573025 + 71824 = 12945^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 167644849 - 2¹⁷ = 167513777 is a prime.

It is not a weakly prime, because it can be changed into another prime (167644843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83822424 + 83822425.

It is an arithmetic number, because the mean of its divisors is an integer number (83822425).

Almost surely, 2^167644849 is an apocalyptic number.

It is an amenable number.

167644849 is a deficient number, since it is larger than the sum of its proper divisors (1).

167644849 is an equidigital number, since it uses as much as digits as its factorization.

167644849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 167644849 is about 12947.7739013315. The cubic root of 167644849 is about 551.3957376782.

The spelling of 167644849 in words is "one hundred sixty-seven million, six hundred forty-four thousand, eight hundred forty-nine".