168925538 has 8 divisors (see below), whose sum is σ = 253817388. Its totient is φ = 84319744.

The previous prime is 168925511. The next prime is 168925571. The reversal of 168925538 is 835529861.

It can be written as a sum of positive squares in 2 ways, for example, as 161213809 + 7711729 = 12697^2 + 2777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 168925492 and 168925501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70031 + ... + 72402.

Almost surely, 2^168925538 is an apocalyptic number.

168925538 is a deficient number, since it is larger than the sum of its proper divisors (84891850).

168925538 is a wasteful number, since it uses less digits than its factorization.

168925538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143028.

The product of its digits is 518400, while the sum is 47.

The square root of 168925538 is about 12997.1357613899. The cubic root of 168925538 is about 552.7962695123.

The spelling of 168925538 in words is "one hundred sixty-eight million, nine hundred twenty-five thousand, five hundred thirty-eight".