136834381 has 8 divisors (see below), whose sum is σ = 138698784. Its totient is φ = 134975280.

The previous prime is 136834363. The next prime is 136834391. The reversal of 136834381 is 183438631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136834381 is a prime.

It is a super-2 number, since 2×136834381² = 37447295647306322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136834381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136834391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105346 + ... + 106636.

It is an arithmetic number, because the mean of its divisors is an integer number (17337348).

Almost surely, 2^136834381 is an apocalyptic number.

It is an amenable number.

136834381 is a deficient number, since it is larger than the sum of its proper divisors (1864403).

136834381 is a wasteful number, since it uses less digits than its factorization.

136834381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651.

The product of its digits is 41472, while the sum is 37.

The square root of 136834381 is about 11697.6228781749. The cubic root of 136834381 is about 515.3058553310.

The spelling of 136834381 in words is "one hundred thirty-six million, eight hundred thirty-four thousand, three hundred eighty-one".