137840168 has 16 divisors (see below), whose sum is σ = 259130880. Its totient is φ = 68738608.

The previous prime is 137840137. The next prime is 137840179. The reversal of 137840168 is 861048731.

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 in 3 ways as a sum of consecutive naturals, for example, 19430 + ... + 25557.

It is an arithmetic number, because the mean of its divisors is an integer number (16195680).

Almost surely, 2^137840168 is an apocalyptic number.

It is an amenable number.

137840168 is a deficient number, since it is larger than the sum of its proper divisors (121290712).

137840168 is a wasteful number, since it uses less digits than its factorization.

137840168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45376 (or 45372 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 137840168 is about 11740.5352518529. The cubic root of 137840168 is about 516.5653419524.

Adding to 137840168 its reverse (861048731), we get a palindrome (998888899).

The spelling of 137840168 in words is "one hundred thirty-seven million, eight hundred forty thousand, one hundred sixty-eight".