168493888 has 14 divisors (see below), whose sum is σ = 334355186. Its totient is φ = 84246912.

The previous prime is 168493879. The next prime is 168493921. The reversal of 168493888 is 888394861.

It can be written as a sum of positive squares in only one way, i.e., 151585344 + 16908544 = 12312^2 + 4112^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316295 + ... + 1316422.

Almost surely, 2^168493888 is an apocalyptic number.

It is an amenable number.

168493888 is a deficient number, since it is larger than the sum of its proper divisors (165861298).

168493888 is an equidigital number, since it uses as much as digits as its factorization.

168493888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632729 (or 2632719 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 55.

The square root of 168493888 is about 12980.5195581687. The cubic root of 168493888 is about 552.3250203790.

The spelling of 168493888 in words is "one hundred sixty-eight million, four hundred ninety-three thousand, eight hundred eighty-eight".