16291019 has 4 divisors (see below), whose sum is σ = 16300320. Its totient is φ = 16281720.

The previous prime is 16291013. The next prime is 16291043. The reversal of 16291019 is 91019261.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16291019 - 2¹⁶ = 16225483 is a prime.

It is a super-2 number, since 2×16291019² = 530794600116722, 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 = 16290982 and 16291000.

It is not an unprimeable number, because it can be changed into a prime (16291013) 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, 1139 + ... + 5820.

It is an arithmetic number, because the mean of its divisors is an integer number (4075080).

Almost surely, 2^16291019 is an apocalyptic number.

16291019 is a deficient number, since it is larger than the sum of its proper divisors (9301).

16291019 is an equidigital number, since it uses as much as digits as its factorization.

16291019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9300.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 16291019 is about 4036.2134482705. The cubic root of 16291019 is about 253.5027938593.

The spelling of 16291019 in words is "sixteen million, two hundred ninety-one thousand, nineteen".