16091864 has 8 divisors (see below), whose sum is σ = 30172260. Its totient is φ = 8045928.

The previous prime is 16091857. The next prime is 16091869. The reversal of 16091864 is 46819061.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16091869) 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 as a sum of consecutive naturals, namely, 1005734 + ... + 1005749.

Almost surely, 2^16091864 is an apocalyptic number.

It is an amenable number.

16091864 is a deficient number, since it is larger than the sum of its proper divisors (14080396).

16091864 is a wasteful number, since it uses less digits than its factorization.

16091864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011489 (or 2011485 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 16091864 is about 4011.4665647366. The cubic root of 16091864 is about 252.4655457351.

The spelling of 16091864 in words is "sixteen million, ninety-one thousand, eight hundred sixty-four".