16018919 has 16 divisors (see below), whose sum is σ = 19726080. Its totient is φ = 12700800.

The previous prime is 16018907. The next prime is 16018927. The reversal of 16018919 is 91981061.

It is not a de Polignac number, because 16018919 - 2¹⁶ = 15953383 is a prime.

It is a super-2 number, since 2×16018919² = 513211531857122, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16018969) 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, 4319 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (1232880).

Almost surely, 2^16018919 is an apocalyptic number.

16018919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16018919 is a deficient number, since it is larger than the sum of its proper divisors (3707161).

16018919 is a wasteful number, since it uses less digits than its factorization.

16018919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 16018919 is about 4002.3641763338. The cubic root of 16018919 is about 252.0834893851.

The spelling of 16018919 in words is "sixteen million, eighteen thousand, nine hundred nineteen".