136881916 has 6 divisors (see below), whose sum is σ = 239543360. Its totient is φ = 68440956.

The previous prime is 136881889. The next prime is 136881917. The reversal of 136881916 is 619188631.

It is a happy number.

136881916 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136881917) 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 as a sum of consecutive naturals, namely, 17110236 + ... + 17110243.

Almost surely, 2^136881916 is an apocalyptic number.

It is an amenable number.

136881916 is a deficient number, since it is larger than the sum of its proper divisors (102661444).

136881916 is a wasteful number, since it uses less digits than its factorization.

136881916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34220483 (or 34220481 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 136881916 is about 11699.6545248140. The cubic root of 136881916 is about 515.3655192541.

The spelling of 136881916 in words is "one hundred thirty-six million, eight hundred eighty-one thousand, nine hundred sixteen".