135919771 has 6 divisors (see below), whose sum is σ = 147179580. Its totient is φ = 125464248.

The previous prime is 135919769. The next prime is 135919783. The reversal of 135919771 is 177919531.

135919771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135919771 - 2¹ = 135919769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135919271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401961 + ... + 402298.

It is an arithmetic number, because the mean of its divisors is an integer number (24529930).

Almost surely, 2^135919771 is an apocalyptic number.

135919771 is a deficient number, since it is larger than the sum of its proper divisors (11259809).

135919771 is an equidigital number, since it uses as much as digits as its factorization.

135919771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804285 (or 804272 counting only the distinct ones).

The product of its digits is 59535, while the sum is 43.

The square root of 135919771 is about 11658.4634922446. The cubic root of 135919771 is about 514.1551750291.

The spelling of 135919771 in words is "one hundred thirty-five million, nine hundred nineteen thousand, seven hundred seventy-one".