137543861 has 24 divisors (see below), whose sum is σ = 171288000. Its totient is φ = 108141696.

The previous prime is 137543803. The next prime is 137543867. The reversal of 137543861 is 168345731.

It is not a de Polignac number, because 137543861 - 2⁶ = 137543797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137543867) 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 in 23 ways as a sum of consecutive naturals, for example, 275390 + ... + 275888.

It is an arithmetic number, because the mean of its divisors is an integer number (7137000).

Almost surely, 2^137543861 is an apocalyptic number.

It is an amenable number.

137543861 is a deficient number, since it is larger than the sum of its proper divisors (33744139).

137543861 is a wasteful number, since it uses less digits than its factorization.

137543861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 752 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 137543861 is about 11727.9094897599. The cubic root of 137543861 is about 516.1949329097.

The spelling of 137543861 in words is "one hundred thirty-seven million, five hundred forty-three thousand, eight hundred sixty-one".