16038918 has 64 divisors (see below), whose sum is σ = 41149440. Its totient is φ = 4536000.

The previous prime is 16038917. The next prime is 16038923. The reversal of 16038918 is 81983061.

16038918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16038918² = 514493781221448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16038917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56938 + ... + 57218.

It is an arithmetic number, because the mean of its divisors is an integer number (642960).

Almost surely, 2^16038918 is an apocalyptic number.

16038918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16038918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20574720).

16038918 is an abundant number, since it is smaller than the sum of its proper divisors (25110522).

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

16038918 is a wasteful number, since it uses less digits than its factorization.

16038918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 16038918 is about 4004.8617953682. The cubic root of 16038918 is about 252.1883512499.

The spelling of 16038918 in words is "sixteen million, thirty-eight thousand, nine hundred eighteen".