16018091 has 2 divisors, whose sum is σ = 16018092. Its totient is φ = 16018090.

The previous prime is 16018043. The next prime is 16018127. The reversal of 16018091 is 19081061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16018091 - 2⁶ = 16018027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16018091.

It is not a weakly prime, because it can be changed into another prime (16018001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8009045 + 8009046.

It is an arithmetic number, because the mean of its divisors is an integer number (8009046).

Almost surely, 2^16018091 is an apocalyptic number.

16018091 is a deficient number, since it is larger than the sum of its proper divisors (1).

16018091 is an equidigital number, since it uses as much as digits as its factorization.

16018091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 16018091 is about 4002.2607361340. The cubic root of 16018091 is about 252.0791460058.

The spelling of 16018091 in words is "sixteen million, eighteen thousand, ninety-one".