137638885 has 8 divisors (see below), whose sum is σ = 174882456. Its totient is φ = 103633920.

The previous prime is 137638883. The next prime is 137638909. The reversal of 137638885 is 588836731.

It can be written as a sum of positive squares in 4 ways, for example, as 39212644 + 98426241 = 6262^2 + 9921^2 .

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

It is not a de Polignac number, because 137638885 - 2¹ = 137638883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137638883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809556 + ... + 809725.

It is an arithmetic number, because the mean of its divisors is an integer number (21860307).

Almost surely, 2^137638885 is an apocalyptic number.

It is an amenable number.

137638885 is a deficient number, since it is larger than the sum of its proper divisors (37243571).

137638885 is a wasteful number, since it uses less digits than its factorization.

137638885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619303.

The product of its digits is 967680, while the sum is 49.

The square root of 137638885 is about 11731.9599811796. The cubic root of 137638885 is about 516.3137789162.

The spelling of 137638885 in words is "one hundred thirty-seven million, six hundred thirty-eight thousand, eight hundred eighty-five".