137889658 has 8 divisors (see below), whose sum is σ = 209158740. Its totient is φ = 68170080.

The previous prime is 137889641. The next prime is 137889659. The reversal of 137889658 is 856988731.

It can be written as a sum of positive squares in 2 ways, for example, as 136258929 + 1630729 = 11673^2 + 1277^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 137889599 and 137889608.

It is not an unprimeable number, because it can be changed into a prime (137889659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387153 + ... + 387508.

Almost surely, 2^137889658 is an apocalyptic number.

137889658 is a deficient number, since it is larger than the sum of its proper divisors (71269082).

137889658 is an equidigital number, since it uses as much as digits as its factorization.

137889658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774752.

The product of its digits is 2903040, while the sum is 55.

The square root of 137889658 is about 11742.6427178894. The cubic root of 137889658 is about 516.6271569279.

The spelling of 137889658 in words is "one hundred thirty-seven million, eight hundred eighty-nine thousand, six hundred fifty-eight".