16388061 has 4 divisors (see below), whose sum is σ = 21850752. Its totient is φ = 10925372.

The previous prime is 16388059. The next prime is 16388081. The reversal of 16388061 is 16088361.

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 16388061 - 2¹ = 16388059 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16388011) 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, 2731341 + ... + 2731346.

It is an arithmetic number, because the mean of its divisors is an integer number (5462688).

Almost surely, 2^16388061 is an apocalyptic number.

It is an amenable number.

16388061 is a deficient number, since it is larger than the sum of its proper divisors (5462691).

16388061 is an equidigital number, since it uses as much as digits as its factorization.

16388061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5462690.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 16388061 is about 4048.2170149339. The cubic root of 16388061 is about 254.0051510725.

The spelling of 16388061 in words is "sixteen million, three hundred eighty-eight thousand, sixty-one".