16201191 has 16 divisors (see below), whose sum is σ = 22353408. Its totient is φ = 10430400.

The previous prime is 16201181. The next prime is 16201201. The reversal of 16201191 is 19110261.

It is an interprime number because it is at equal distance from previous prime (16201181) and next prime (16201201).

It is not a de Polignac number, because 16201191 - 2¹⁴ = 16184807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12546 + ... + 13776.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 2^16201191 is an apocalyptic number.

16201191 is a deficient number, since it is larger than the sum of its proper divisors (6152217).

16201191 is a wasteful number, since it uses less digits than its factorization.

16201191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 16201191 is about 4025.0703099449. The cubic root of 16201191 is about 253.0360002306.

The spelling of 16201191 in words is "sixteen million, two hundred one thousand, one hundred ninety-one".