168999048 has 80 divisors (see below), whose sum is σ = 484975260. Its totient is φ = 54950400.

The previous prime is 168999043. The next prime is 168999059. The reversal of 168999048 is 840999861.

It can be written as a sum of positive squares in 2 ways, for example, as 141562404 + 27436644 = 11898^2 + 5238^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 168998985 and 168999003.

It is not an unprimeable number, because it can be changed into a prime (168999043) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23388 + ... + 29748.

Almost surely, 2^168999048 is an apocalyptic number.

168999048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168999048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242487630).

168999048 is an abundant number, since it is smaller than the sum of its proper divisors (315976212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168999048 is a wasteful number, since it uses less digits than its factorization.

168999048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420 (or 6407 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 168999048 is about 12999.9633845638. The cubic root of 168999048 is about 552.8764432212.

The spelling of 168999048 in words is "one hundred sixty-eight million, nine hundred ninety-nine thousand, forty-eight".