137744081 has 8 divisors (see below), whose sum is σ = 149789160. Its totient is φ = 126137088.

The previous prime is 137744071. The next prime is 137744083. The reversal of 137744081 is 180447731.

137744081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 109014481 + 28729600 = 10441^2 + 5360^2 .

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 137744081 - 2⁶ = 137744017 is a prime.

It is a super-2 number, since 2×137744081² = 37946863701069122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137744083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108866 + ... + 110123.

It is an arithmetic number, because the mean of its divisors is an integer number (18723645).

Almost surely, 2^137744081 is an apocalyptic number.

It is an amenable number.

137744081 is a deficient number, since it is larger than the sum of its proper divisors (12045079).

137744081 is a wasteful number, since it uses less digits than its factorization.

137744081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219043.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 137744081 is about 11736.4424337190. The cubic root of 137744081 is about 516.4452832095.

The spelling of 137744081 in words is "one hundred thirty-seven million, seven hundred forty-four thousand, eighty-one".