135181774 has 16 divisors (see below), whose sum is σ = 249566688. Its totient is φ = 53478432.

The previous prime is 135181759. The next prime is 135181801. The reversal of 135181774 is 477181531.

135181774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×135181774² = 36548224043574152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371197 + ... + 371560.

It is an arithmetic number, because the mean of its divisors is an integer number (15597918).

Almost surely, 2^135181774 is an apocalyptic number.

135181774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135181774 is a deficient number, since it is larger than the sum of its proper divisors (114384914).

135181774 is a wasteful number, since it uses less digits than its factorization.

135181774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742779.

The product of its digits is 23520, while the sum is 37.

The square root of 135181774 is about 11626.7697147574. The cubic root of 135181774 is about 513.2229245691. Note that the first 3 decimals are identical.

The spelling of 135181774 in words is "one hundred thirty-five million, one hundred eighty-one thousand, seven hundred seventy-four".