137378381 has 8 divisors (see below), whose sum is σ = 157192704. Its totient is φ = 117611280.

The previous prime is 137378347. The next prime is 137378389. The reversal of 137378381 is 183873731.

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 137378381 - 2¹⁴ = 137361997 is a prime.

It is a super-2 number, since 2×137378381² = 37745639132362322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137378389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5330 + ... + 17411.

It is an arithmetic number, because the mean of its divisors is an integer number (19649088).

Almost surely, 2^137378381 is an apocalyptic number.

It is an amenable number.

137378381 is a deficient number, since it is larger than the sum of its proper divisors (19814323).

137378381 is an equidigital number, since it uses as much as digits as its factorization.

137378381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23611.

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

The square root of 137378381 is about 11720.8524007429. The cubic root of 137378381 is about 515.9878372331.

The spelling of 137378381 in words is "one hundred thirty-seven million, three hundred seventy-eight thousand, three hundred eighty-one".