136258381 has 8 divisors (see below), whose sum is σ = 156098880. Its totient is φ = 116511648.

The previous prime is 136258373. The next prime is 136258439. The reversal of 136258381 is 183852631.

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

It is a cyclic number.

It is not a de Polignac number, because 136258381 - 2³ = 136258373 is a prime.

It is a super-2 number, since 2×136258381² = 37132692785482322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136258381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136258351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20296 + ... + 26161.

It is an arithmetic number, because the mean of its divisors is an integer number (19512360).

Almost surely, 2^136258381 is an apocalyptic number.

It is an amenable number.

136258381 is a deficient number, since it is larger than the sum of its proper divisors (19840499).

136258381 is an equidigital number, since it uses as much as digits as its factorization.

136258381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46883.

The product of its digits is 34560, while the sum is 37.

The square root of 136258381 is about 11672.9765270046. The cubic root of 136258381 is about 514.5817838254.

The spelling of 136258381 in words is "one hundred thirty-six million, two hundred fifty-eight thousand, three hundred eighty-one".