161802888 has 64 divisors (see below), whose sum is σ = 449702400. Its totient is φ = 48176640.

The previous prime is 161802881. The next prime is 161802899. The reversal of 161802888 is 888208161.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (161802881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1308 + ... + 18036.

It is an arithmetic number, because the mean of its divisors is an integer number (7026600).

Almost surely, 2^161802888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161802888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224851200).

161802888 is an abundant number, since it is smaller than the sum of its proper divisors (287899512).

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

161802888 is a wasteful number, since it uses less digits than its factorization.

161802888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16782 (or 16778 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 42.

The square root of 161802888 is about 12720.1764138710. The cubic root of 161802888 is about 544.9149916510.

The spelling of 161802888 in words is "one hundred sixty-one million, eight hundred two thousand, eight hundred eighty-eight".