137437609 has 8 divisors (see below), whose sum is σ = 139950720. Its totient is φ = 134930736.

The previous prime is 137437591. The next prime is 137437631. The reversal of 137437609 is 906734731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137437609 - 2⁵ = 137437577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137437009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83139 + ... + 84775.

It is an arithmetic number, because the mean of its divisors is an integer number (17493840).

Almost surely, 2^137437609 is an apocalyptic number.

It is an amenable number.

137437609 is a deficient number, since it is larger than the sum of its proper divisors (2513111).

137437609 is a wasteful number, since it uses less digits than its factorization.

137437609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 137437609 is about 11723.3787365247. The cubic root of 137437609 is about 516.0619792646.

It can be divided in two parts, 1374 and 37609, that added together give a palindrome (38983).

The spelling of 137437609 in words is "one hundred thirty-seven million, four hundred thirty-seven thousand, six hundred nine".