16126391 has 2 divisors, whose sum is σ = 16126392. Its totient is φ = 16126390.

The previous prime is 16126379. The next prime is 16126399. The reversal of 16126391 is 19362161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16126391 - 2²² = 11932087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16126399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8063195 + 8063196.

It is an arithmetic number, because the mean of its divisors is an integer number (8063196).

Almost surely, 2^16126391 is an apocalyptic number.

16126391 is a deficient number, since it is larger than the sum of its proper divisors (1).

16126391 is an equidigital number, since it uses as much as digits as its factorization.

16126391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 16126391 is about 4015.7677970719. The cubic root of 16126391 is about 252.6459816571.

The spelling of 16126391 in words is "sixteen million, one hundred twenty-six thousand, three hundred ninety-one".