135619843 has 2 divisors, whose sum is σ = 135619844. Its totient is φ = 135619842.

The previous prime is 135619787. The next prime is 135619867. The reversal of 135619843 is 348916531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135619843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135619796 and 135619805.

It is not a weakly prime, because it can be changed into another prime (135619243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67809921 + 67809922.

It is an arithmetic number, because the mean of its divisors is an integer number (67809922).

Almost surely, 2^135619843 is an apocalyptic number.

135619843 is a deficient number, since it is larger than the sum of its proper divisors (1).

135619843 is an equidigital number, since it uses as much as digits as its factorization.

135619843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 135619843 is about 11645.5932867330. The cubic root of 135619843 is about 513.7767088685.

The spelling of 135619843 in words is "one hundred thirty-five million, six hundred nineteen thousand, eight hundred forty-three".