136438814 has 4 divisors (see below), whose sum is σ = 204658224. Its totient is φ = 68219406.

The previous prime is 136438811. The next prime is 136438817. The reversal of 136438814 is 418834631.

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

It is an interprime number because it is at equal distance from previous prime (136438811) and next prime (136438817).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136438811) by changing a digit.

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, 34109702 + ... + 34109705.

It is an arithmetic number, because the mean of its divisors is an integer number (51164556).

Almost surely, 2^136438814 is an apocalyptic number.

136438814 is a deficient number, since it is larger than the sum of its proper divisors (68219410).

136438814 is an equidigital number, since it uses as much as digits as its factorization.

136438814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68219409.

The product of its digits is 55296, while the sum is 38.

The square root of 136438814 is about 11680.7026329755. The cubic root of 136438814 is about 514.8088196026.

The spelling of 136438814 in words is "one hundred thirty-six million, four hundred thirty-eight thousand, eight hundred fourteen".