16258861 has 4 divisors (see below), whose sum is σ = 16965792. Its totient is φ = 15551932.

The previous prime is 16258843. The next prime is 16258867. The reversal of 16258861 is 16885261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16258861 - 2⁵ = 16258829 is a prime.

It is a super-2 number, since 2×16258861² = 528701122034642, which contains 22 as substring.

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 16258861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16258867) 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, 353431 + ... + 353476.

It is an arithmetic number, because the mean of its divisors is an integer number (4241448).

Almost surely, 2^16258861 is an apocalyptic number.

It is an amenable number.

16258861 is a deficient number, since it is larger than the sum of its proper divisors (706931).

16258861 is an equidigital number, since it uses as much as digits as its factorization.

16258861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706930.

The product of its digits is 23040, while the sum is 37.

The square root of 16258861 is about 4032.2277961445. The cubic root of 16258861 is about 253.3358815918.

The spelling of 16258861 in words is "sixteen million, two hundred fifty-eight thousand, eight hundred sixty-one".