16181396 has 48 divisors (see below), whose sum is σ = 35707392. Its totient is φ = 6232800.

The previous prime is 16181381. The next prime is 16181401. The reversal of 16181396 is 69318161.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32711 + ... + 33201.

It is an arithmetic number, because the mean of its divisors is an integer number (743904).

Almost surely, 2^16181396 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 16181396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17853696).

16181396 is an abundant number, since it is smaller than the sum of its proper divisors (19525996).

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

16181396 is a wasteful number, since it uses less digits than its factorization.

16181396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 16181396 is about 4022.6105951235. The cubic root of 16181396 is about 252.9329030985.

The spelling of 16181396 in words is "sixteen million, one hundred eighty-one thousand, three hundred ninety-six".