16093661 has 4 divisors (see below), whose sum is σ = 16105824. Its totient is φ = 16081500.

The previous prime is 16093633. The next prime is 16093663. The reversal of 16093661 is 16639061.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16639061 = 137 ⋅121453.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16093661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16093663) 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, 3815 + ... + 6836.

It is an arithmetic number, because the mean of its divisors is an integer number (4026456).

Almost surely, 2^16093661 is an apocalyptic number.

It is an amenable number.

16093661 is a deficient number, since it is larger than the sum of its proper divisors (12163).

16093661 is a wasteful number, since it uses less digits than its factorization.

16093661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12162.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16093661 is about 4011.6905414052. The cubic root of 16093661 is about 252.4749431071.

The spelling of 16093661 in words is "sixteen million, ninety-three thousand, six hundred sixty-one".