137488643 has 8 divisors (see below), whose sum is σ = 138542208. Its totient is φ = 136439424.

The previous prime is 137488609. The next prime is 137488649. The reversal of 137488643 is 346884731.

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 137488643 - 2⁸ = 137488387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137488594 and 137488603.

It is not an unprimeable number, because it can be changed into a prime (137488649) 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 7 ways as a sum of consecutive naturals, for example, 87755 + ... + 89307.

It is an arithmetic number, because the mean of its divisors is an integer number (17317776).

Almost surely, 2^137488643 is an apocalyptic number.

137488643 is a deficient number, since it is larger than the sum of its proper divisors (1053565).

137488643 is a wasteful number, since it uses less digits than its factorization.

137488643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173.

The product of its digits is 387072, while the sum is 44.

The square root of 137488643 is about 11725.5551254514. Note that the first 3 decimals coincide. The cubic root of 137488643 is about 516.1258469063.

The spelling of 137488643 in words is "one hundred thirty-seven million, four hundred eighty-eight thousand, six hundred forty-three".