161246844 has 144 divisors (see below), whose sum is σ = 484848000. Its totient is φ = 44634240.

The previous prime is 161246831. The next prime is 161246849. The reversal of 161246844 is 448642161.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 161246799 and 161246808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161246849) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217827 + ... + 218565.

It is an arithmetic number, because the mean of its divisors is an integer number (3367000).

Almost surely, 2^161246844 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 161246844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242424000).

161246844 is an abundant number, since it is smaller than the sum of its proper divisors (323601156).

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

161246844 is a wasteful number, since it uses less digits than its factorization.

161246844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 803 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 161246844 is about 12698.3008312136. The cubic root of 161246844 is about 544.2900657149.

The spelling of 161246844 in words is "one hundred sixty-one million, two hundred forty-six thousand, eight hundred forty-four".