135892478 has 4 divisors (see below), whose sum is σ = 203838720. Its totient is φ = 67946238.

The previous prime is 135892459. The next prime is 135892483. The reversal of 135892478 is 874298531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874298531 = 89 ⋅9823579.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33973118 + ... + 33973121.

It is an arithmetic number, because the mean of its divisors is an integer number (50959680).

Almost surely, 2^135892478 is an apocalyptic number.

135892478 is a deficient number, since it is larger than the sum of its proper divisors (67946242).

135892478 is an equidigital number, since it uses as much as digits as its factorization.

135892478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67946241.

The product of its digits is 483840, while the sum is 47.

The square root of 135892478 is about 11657.2929104488. The cubic root of 135892478 is about 514.1207582148.

The spelling of 135892478 in words is "one hundred thirty-five million, eight hundred ninety-two thousand, four hundred seventy-eight".