167644949 has 2 divisors, whose sum is σ = 167644950. Its totient is φ = 167644948.

The previous prime is 167644937. The next prime is 167644957. The reversal of 167644949 is 949446761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131560900 + 36084049 = 11470^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 167644949 - 2⁸ = 167644693 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 167644897 and 167644906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167644849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83822474 + 83822475.

It is an arithmetic number, because the mean of its divisors is an integer number (83822475).

Almost surely, 2^167644949 is an apocalyptic number.

It is an amenable number.

167644949 is a deficient number, since it is larger than the sum of its proper divisors (1).

167644949 is an equidigital number, since it uses as much as digits as its factorization.

167644949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 167644949 is about 12947.7777629986. Note that the first 4 decimals coincide. The cubic root of 167644949 is about 551.3958473138.

The spelling of 167644949 in words is "one hundred sixty-seven million, six hundred forty-four thousand, nine hundred forty-nine".