137443656 has 64 divisors (see below), whose sum is σ = 395049600. Its totient is φ = 39034368.

The previous prime is 137443643. The next prime is 137443661. The reversal of 137443656 is 656344731.

137443656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26700 + ... + 31428.

It is an arithmetic number, because the mean of its divisors is an integer number (6172650).

Almost surely, 2^137443656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137443656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197524800).

137443656 is an abundant number, since it is smaller than the sum of its proper divisors (257605944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137443656 is a wasteful number, since it uses less digits than its factorization.

137443656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4918 (or 4914 counting only the distinct ones).

The product of its digits is 181440, while the sum is 39.

The square root of 137443656 is about 11723.6366371532. The cubic root of 137443656 is about 516.0695477437.

The spelling of 137443656 in words is "one hundred thirty-seven million, four hundred forty-three thousand, six hundred fifty-six".