136548638 has 4 divisors (see below), whose sum is σ = 204822960. Its totient is φ = 68274318.

The previous prime is 136548619. The next prime is 136548647. The reversal of 136548638 is 836845631.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34137158 + ... + 34137161.

It is an arithmetic number, because the mean of its divisors is an integer number (51205740).

Almost surely, 2^136548638 is an apocalyptic number.

136548638 is a deficient number, since it is larger than the sum of its proper divisors (68274322).

136548638 is an equidigital number, since it uses as much as digits as its factorization.

136548638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68274321.

The product of its digits is 414720, while the sum is 44.

The square root of 136548638 is about 11685.4027744019. The cubic root of 136548638 is about 514.9469112963.

The spelling of 136548638 in words is "one hundred thirty-six million, five hundred forty-eight thousand, six hundred thirty-eight".