16383438 has 32 divisors (see below), whose sum is σ = 37585920. Its totient is φ = 5284440.

The previous prime is 16383431. The next prime is 16383439. The reversal of 16383438 is 83438361.

It is a happy number.

It is a super-3 number, since 3×16383438³ (a number of 23 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16383431) 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, 3220 + ... + 6567.

It is an arithmetic number, because the mean of its divisors is an integer number (1174560).

Almost surely, 2^16383438 is an apocalyptic number.

16383438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16383438 is an abundant number, since it is smaller than the sum of its proper divisors (21202482).

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

16383438 is a wasteful number, since it uses less digits than its factorization.

16383438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829 (or 9823 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 16383438 is about 4047.6459825434. The cubic root of 16383438 is about 253.9812642472.

The spelling of 16383438 in words is "sixteen million, three hundred eighty-three thousand, four hundred thirty-eight".