16020791 has 4 divisors (see below), whose sum is σ = 16411584. Its totient is φ = 15630000.

The previous prime is 16020779. The next prime is 16020803. The reversal of 16020791 is 19702061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19702061 = 53 ⋅371737.

It is an interprime number because it is at equal distance from previous prime (16020779) and next prime (16020803).

It is a cyclic number.

It is not a de Polignac number, because 16020791 - 2¹⁸ = 15758647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16020791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020761) 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, 195335 + ... + 195416.

It is an arithmetic number, because the mean of its divisors is an integer number (4102896).

Almost surely, 2^16020791 is an apocalyptic number.

16020791 is a deficient number, since it is larger than the sum of its proper divisors (390793).

16020791 is an equidigital number, since it uses as much as digits as its factorization.

16020791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390792.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 16020791 is about 4002.5980312792. The cubic root of 16020791 is about 252.0933086476.

The spelling of 16020791 in words is "sixteen million, twenty thousand, seven hundred ninety-one".