16191101 has 2 divisors, whose sum is σ = 16191102. Its totient is φ = 16191100.

The previous prime is 16191079. The next prime is 16191107. The reversal of 16191101 is 10119161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10407076 + 5784025 = 3226^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 16191101 - 2⁶ = 16191037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16191107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8095550 + 8095551.

It is an arithmetic number, because the mean of its divisors is an integer number (8095551).

Almost surely, 2^16191101 is an apocalyptic number.

It is an amenable number.

16191101 is a deficient number, since it is larger than the sum of its proper divisors (1).

16191101 is an equidigital number, since it uses as much as digits as its factorization.

16191101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 16191101 is about 4023.8167204782. The cubic root of 16191101 is about 252.9834595778.

The spelling of 16191101 in words is "sixteen million, one hundred ninety-one thousand, one hundred one".