135401958 has 12 divisors (see below), whose sum is σ = 293370948. Its totient is φ = 45133980.

The previous prime is 135401951. The next prime is 135401977. The reversal of 135401958 is 859104531.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135401951) 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, 3761148 + ... + 3761183.

It is an arithmetic number, because the mean of its divisors is an integer number (24447579).

Almost surely, 2^135401958 is an apocalyptic number.

135401958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135401958 is an abundant number, since it is smaller than the sum of its proper divisors (157968990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135401958 is a wasteful number, since it uses less digits than its factorization.

135401958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522339 (or 7522336 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 135401958 is about 11636.2347002800. The cubic root of 135401958 is about 513.5014191600.

The spelling of 135401958 in words is "one hundred thirty-five million, four hundred one thousand, nine hundred fifty-eight".