138380545 has 8 divisors (see below), whose sum is σ = 166328640. Its totient is φ = 110523120.

The previous prime is 138380537. The next prime is 138380573. The reversal of 138380545 is 545083831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138380545 - 2³ = 138380537 is a prime.

It is an unprimeable number.

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, 19261 + ... + 25450.

It is an arithmetic number, because the mean of its divisors is an integer number (20791080).

Almost surely, 2^138380545 is an apocalyptic number.

It is an amenable number.

138380545 is a deficient number, since it is larger than the sum of its proper divisors (27948095).

138380545 is an equidigital number, since it uses as much as digits as its factorization.

138380545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45335.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 138380545 is about 11763.5260445157. The cubic root of 138380545 is about 517.2394948593.

The spelling of 138380545 in words is "one hundred thirty-eight million, three hundred eighty thousand, five hundred forty-five".