168257146 has 8 divisors (see below), whose sum is σ = 252440820. Its totient is φ = 84110208.

The previous prime is 168257107. The next prime is 168257147. The reversal of 168257146 is 641752861.

168257146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155376225 + 12880921 = 12465^2 + 3589^2 .

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

It is a super-3 number, since 3×168257146³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168257099 and 168257108.

It is not an unprimeable number, because it can be changed into a prime (168257147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12660 + ... + 22288.

Almost surely, 2^168257146 is an apocalyptic number.

168257146 is a deficient number, since it is larger than the sum of its proper divisors (84183674).

168257146 is an equidigital number, since it uses as much as digits as its factorization.

168257146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18368.

The product of its digits is 80640, while the sum is 40.

The square root of 168257146 is about 12971.3972262050. The cubic root of 168257146 is about 552.0662180766.

The spelling of 168257146 in words is "one hundred sixty-eight million, two hundred fifty-seven thousand, one hundred forty-six".