16040819 has 4 divisors (see below), whose sum is σ = 16163400. Its totient is φ = 15918240.

The previous prime is 16040803. The next prime is 16040831. The reversal of 16040819 is 91804061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16040819 - 2⁴ = 16040803 is a prime.

It is a super-2 number, since 2×16040819² = 514615748381522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16040791 and 16040800.

It is not an unprimeable number, because it can be changed into a prime (16040839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61094 + ... + 61355.

It is an arithmetic number, because the mean of its divisors is an integer number (4040850).

Almost surely, 2^16040819 is an apocalyptic number.

16040819 is a deficient number, since it is larger than the sum of its proper divisors (122581).

16040819 is a wasteful number, since it uses less digits than its factorization.

16040819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122580.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16040819 is about 4005.0991248657. The cubic root of 16040819 is about 252.1983143308.

The spelling of 16040819 in words is "sixteen million, forty thousand, eight hundred nineteen".