16117019 has 4 divisors (see below), whose sum is σ = 16152744. Its totient is φ = 16081296.

The previous prime is 16116983. The next prime is 16117033. The reversal of 16117019 is 91071161.

16117019 = T₂ + T₃ + ... + T₄₅₈.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16117019 is a prime.

It is a super-2 number, since 2×16117019² = 519516602892722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16117039) 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, 17177 + ... + 18090.

It is an arithmetic number, because the mean of its divisors is an integer number (4038186).

Almost surely, 2^16117019 is an apocalyptic number.

16117019 is a deficient number, since it is larger than the sum of its proper divisors (35725).

16117019 is an equidigital number, since it uses as much as digits as its factorization.

16117019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35724.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 16117019 is about 4014.6007273451. The cubic root of 16117019 is about 252.5970296633.

The spelling of 16117019 in words is "sixteen million, one hundred seventeen thousand, nineteen".