26938643 has 2 divisors, whose sum is σ = 26938644. Its totient is φ = 26938642.

The previous prime is 26938631. The next prime is 26938649. The reversal of 26938643 is 34683962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26938643 - 2⁶ = 26938579 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26938643.

It is not a weakly prime, because it can be changed into another prime (26938649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13469321 + 13469322.

It is an arithmetic number, because the mean of its divisors is an integer number (13469322).

Almost surely, 2^26938643 is an apocalyptic number.

26938643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26938643 is an equidigital number, since it uses as much as digits as its factorization.

26938643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The square root of 26938643 is about 5190.2449845841. The cubic root of 26938643 is about 299.7725794951.

The spelling of 26938643 in words is "twenty-six million, nine hundred thirty-eight thousand, six hundred forty-three".