168949741 has 4 divisors (see below), whose sum is σ = 170026012. Its totient is φ = 167873472.

The previous prime is 168949727. The next prime is 168949769. The reversal of 168949741 is 147949861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104468841 + 64480900 = 10221^2 + 8030^2 .

It is a cyclic number.

It is not a de Polignac number, because 168949741 - 2¹¹ = 168947693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168940741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537900 + ... + 538213.

It is an arithmetic number, because the mean of its divisors is an integer number (42506503).

Almost surely, 2^168949741 is an apocalyptic number.

It is an amenable number.

168949741 is a deficient number, since it is larger than the sum of its proper divisors (1076271).

168949741 is a wasteful number, since it uses less digits than its factorization.

168949741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076270.

The product of its digits is 435456, while the sum is 49.

The square root of 168949741 is about 12998.0668178003. The cubic root of 168949741 is about 552.8226690911.

The spelling of 168949741 in words is "one hundred sixty-eight million, nine hundred forty-nine thousand, seven hundred forty-one".