136143858 has 8 divisors (see below), whose sum is σ = 272287728. Its totient is φ = 45381284.

The previous prime is 136143841. The next prime is 136143863. The reversal of 136143858 is 858341631.

136143858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

136143858 is an admirable number.

It is a super-2 number, since 2×136143858² = 37070300142248328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11345316 + ... + 11345327.

It is an arithmetic number, because the mean of its divisors is an integer number (34035966).

Almost surely, 2^136143858 is an apocalyptic number.

136143858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

136143858 is a wasteful number, since it uses less digits than its factorization.

136143858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22690648.

The product of its digits is 69120, while the sum is 39.

The square root of 136143858 is about 11668.0700203590. The cubic root of 136143858 is about 514.4375774844.

The spelling of 136143858 in words is "one hundred thirty-six million, one hundred forty-three thousand, eight hundred fifty-eight".