169825138 has 32 divisors (see below), whose sum is σ = 312004224. Its totient is φ = 67667712.

The previous prime is 169825133. The next prime is 169825141. The reversal of 169825138 is 831528961.

169825138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 169825094 and 169825103.

It is not an unprimeable number, because it can be changed into a prime (169825133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15456 + ... + 24052.

It is an arithmetic number, because the mean of its divisors is an integer number (9750132).

Almost surely, 2^169825138 is an apocalyptic number.

169825138 is a deficient number, since it is larger than the sum of its proper divisors (142179086).

169825138 is a wasteful number, since it uses less digits than its factorization.

169825138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8706.

The product of its digits is 103680, while the sum is 43.

The square root of 169825138 is about 13031.6974335656. The cubic root of 169825138 is about 553.7758240992.

The spelling of 169825138 in words is "one hundred sixty-nine million, eight hundred twenty-five thousand, one hundred thirty-eight".