137834581 has 4 divisors (see below), whose sum is σ = 137858112. Its totient is φ = 137811052.

The previous prime is 137834573. The next prime is 137834621. The reversal of 137834581 is 185438731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 185438731 = 29 ⋅6394439.

It is a cyclic number.

It is not a de Polignac number, because 137834581 - 2³ = 137834573 is a prime.

It is a super-2 number, since 2×137834581² = 37996743438891122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137834681) 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, 4740 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (34464528).

Almost surely, 2^137834581 is an apocalyptic number.

It is an amenable number.

137834581 is a deficient number, since it is larger than the sum of its proper divisors (23531).

137834581 is a wasteful number, since it uses less digits than its factorization.

137834581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23530.

The product of its digits is 80640, while the sum is 40.

The square root of 137834581 is about 11740.2973131007. The cubic root of 137834581 is about 516.5583626382.

The spelling of 137834581 in words is "one hundred thirty-seven million, eight hundred thirty-four thousand, five hundred eighty-one".