169738 has 4 divisors (see below), whose sum is σ = 254610. Its totient is φ = 84868.

The previous prime is 169733. The next prime is 169751. The reversal of 169738 is 837961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837961 = 31 ⋅27031.

It can be written as a sum of positive squares in only one way, i.e., 113569 + 56169 = 337^2 + 237^2 .

It is not an unprimeable number, because it can be changed into a prime (169733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42433 + ... + 42436.

2¹⁶⁹⁷³⁸ is an apocalyptic number.

169738 is a deficient number, since it is larger than the sum of its proper divisors (84872).

169738 is an equidigital number, since it uses as much as digits as its factorization.

169738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84871.

The product of its digits is 9072, while the sum is 34.

The square root of 169738 is about 411.9927183823. The cubic root of 169738 is about 55.3681092986.

The spelling of 169738 in words is "one hundred sixty-nine thousand, seven hundred thirty-eight".