137858438 has 4 divisors (see below), whose sum is σ = 206787660. Its totient is φ = 68929218.

The previous prime is 137858401. The next prime is 137858443. The reversal of 137858438 is 834858731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834858731 = 7 ⋅119265533.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 137858392 and 137858401.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34464608 + ... + 34464611.

It is an arithmetic number, because the mean of its divisors is an integer number (51696915).

Almost surely, 2^137858438 is an apocalyptic number.

137858438 is a deficient number, since it is larger than the sum of its proper divisors (68929222).

137858438 is an equidigital number, since it uses as much as digits as its factorization.

137858438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68929221.

The product of its digits is 645120, while the sum is 47.

The square root of 137858438 is about 11741.3132996271. The cubic root of 137858438 is about 516.5881636306.

The spelling of 137858438 in words is "one hundred thirty-seven million, eight hundred fifty-eight thousand, four hundred thirty-eight".