135819477 has 16 divisors (see below), whose sum is σ = 213050880. Its totient is φ = 85219776.

The previous prime is 135819469. The next prime is 135819479. The reversal of 135819477 is 774918531.

It is not a de Polignac number, because 135819477 - 2³ = 135819469 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135819479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147493 + ... + 148410.

It is an arithmetic number, because the mean of its divisors is an integer number (13315680).

Almost surely, 2^135819477 is an apocalyptic number.

135819477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

135819477 is a deficient number, since it is larger than the sum of its proper divisors (77231403).

135819477 is a wasteful number, since it uses less digits than its factorization.

135819477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295929 (or 295923 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 135819477 is about 11654.1613597890. The cubic root of 135819477 is about 514.0286803883.

The spelling of 135819477 in words is "one hundred thirty-five million, eight hundred nineteen thousand, four hundred seventy-seven".