162749 has 2 divisors, whose sum is σ = 162750. Its totient is φ = 162748.

The previous prime is 162739. The next prime is 162751. The reversal of 162749 is 947261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 6724 = 395^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 162749 - 2⁸ = 162493 is a prime.

Together with 162751, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81374 + 81375.

It is an arithmetic number, because the mean of its divisors is an integer number (81375).

2¹⁶²⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

162749 is a deficient number, since it is larger than the sum of its proper divisors (1).

162749 is an equidigital number, since it uses as much as digits as its factorization.

162749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 162749 is about 403.4216156827. The cubic root of 162749 is about 54.5975024239.

The spelling of 162749 in words is "one hundred sixty-two thousand, seven hundred forty-nine".