161899848 has 96 divisors (see below), whose sum is σ = 480504960. Its totient is φ = 48839040.

The previous prime is 161899841. The next prime is 161899849. The reversal of 161899848 is 848998161.

161899848 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 161899794 and 161899803.

It is not an unprimeable number, because it can be changed into a prime (161899841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290386 + ... + 290942.

It is an arithmetic number, because the mean of its divisors is an integer number (5005260).

Almost surely, 2^161899848 is an apocalyptic number.

161899848 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 161899848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240252480).

161899848 is an abundant number, since it is smaller than the sum of its proper divisors (318605112).

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

161899848 is a wasteful number, since it uses less digits than its factorization.

161899848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 940 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 161899848 is about 12723.9871109649. The cubic root of 161899848 is about 545.0238162586.

It can be divided in two parts, 161 and 899848, that added together give a palindrome (900009).

The spelling of 161899848 in words is "one hundred sixty-one million, eight hundred ninety-nine thousand, eight hundred forty-eight".