168819741 has 32 divisors (see below), whose sum is σ = 266302080. Its totient is φ = 105331968.

The previous prime is 168819719. The next prime is 168819773. The reversal of 168819741 is 147918861.

It is a happy number.

It is not a de Polignac number, because 168819741 - 2⁹ = 168819229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168819941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89490 + ... + 91356.

It is an arithmetic number, because the mean of its divisors is an integer number (8321940).

Almost surely, 2^168819741 is an apocalyptic number.

It is an amenable number.

168819741 is a deficient number, since it is larger than the sum of its proper divisors (97482339).

168819741 is a wasteful number, since it uses less digits than its factorization.

168819741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2084 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 168819741 is about 12993.0651118202. The cubic root of 168819741 is about 552.6808411381.

The spelling of 168819741 in words is "one hundred sixty-eight million, eight hundred nineteen thousand, seven hundred forty-one".