16019995 has 4 divisors (see below), whose sum is σ = 19224000. Its totient is φ = 12815992.

The previous prime is 16019987. The next prime is 16019999. The reversal of 16019995 is 59991061.

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 16019995 - 2³ = 16019987 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16019999) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1601995 + ... + 1602004.

It is an arithmetic number, because the mean of its divisors is an integer number (4806000).

Almost surely, 2^16019995 is an apocalyptic number.

16019995 is a deficient number, since it is larger than the sum of its proper divisors (3204005).

16019995 is an equidigital number, since it uses as much as digits as its factorization.

16019995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204004.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 16019995 is about 4002.4985946281. The cubic root of 16019995 is about 252.0891334564.

The spelling of 16019995 in words is "sixteen million, nineteen thousand, nine hundred ninety-five".