137738381 has 8 divisors (see below), whose sum is σ = 150587424. Its totient is φ = 124943920.

The previous prime is 137738357. The next prime is 137738401. The reversal of 137738381 is 183837731.

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 137738381 - 2²² = 133544077 is a prime.

It is a super-2 number, since 2×137738381² = 37943723201002322, 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 (137738281) 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, 8270 + ... + 18543.

It is an arithmetic number, because the mean of its divisors is an integer number (18823428).

Almost surely, 2^137738381 is an apocalyptic number.

137738381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

137738381 is a deficient number, since it is larger than the sum of its proper divisors (12849043).

137738381 is a wasteful number, since it uses less digits than its factorization.

137738381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27291.

The product of its digits is 84672, while the sum is 41.

The square root of 137738381 is about 11736.1995978255. The cubic root of 137738381 is about 516.4381594219.

The spelling of 137738381 in words is "one hundred thirty-seven million, seven hundred thirty-eight thousand, three hundred eighty-one".