135481643 has 12 divisors (see below), whose sum is σ = 149615424. Its totient is φ = 122588400.

The previous prime is 135481637. The next prime is 135481669. The reversal of 135481643 is 346184531.

It is not a de Polignac number, because 135481643 - 2⁸ = 135481387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135481613) 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 11 ways as a sum of consecutive naturals, for example, 24473 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (12467952).

Almost surely, 2^135481643 is an apocalyptic number.

135481643 is a deficient number, since it is larger than the sum of its proper divisors (14133781).

135481643 is a wasteful number, since it uses less digits than its factorization.

135481643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266 (or 5255 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 135481643 is about 11639.6581994490. The cubic root of 135481643 is about 513.6021324655.

The spelling of 135481643 in words is "one hundred thirty-five million, four hundred eighty-one thousand, six hundred forty-three".