135894791 has 2 divisors, whose sum is σ = 135894792. Its totient is φ = 135894790.

The previous prime is 135894779. The next prime is 135894823. The reversal of 135894791 is 197498531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135894791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135890791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67947395 + 67947396.

It is an arithmetic number, because the mean of its divisors is an integer number (67947396).

Almost surely, 2^135894791 is an apocalyptic number.

135894791 is a deficient number, since it is larger than the sum of its proper divisors (1).

135894791 is an equidigital number, since it uses as much as digits as its factorization.

135894791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 135894791 is about 11657.3921183085. The cubic root of 135894791 is about 514.1236751154.

The spelling of 135894791 in words is "one hundred thirty-five million, eight hundred ninety-four thousand, seven hundred ninety-one".