249081168 has 160 divisors (see below), whose sum is σ = 775950336. Its totient is φ = 67313664.

The previous prime is 249081139. The next prime is 249081169. The reversal of 249081168 is 861180942.

249081168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249081169) 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, 1290480 + ... + 1290672.

Almost surely, 2^249081168 is an apocalyptic number.

249081168 is a gapful number since it is divisible by the number (28) 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 249081168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387975168).

249081168 is an abundant number, since it is smaller than the sum of its proper divisors (526869168).

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

249081168 is a wasteful number, since it uses less digits than its factorization.

249081168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 249081168 is about 15782.3055349971. The cubic root of 249081168 is about 629.1878069901.

The spelling of 249081168 in words is "two hundred forty-nine million, eighty-one thousand, one hundred sixty-eight".