138545045 has 8 divisors (see below), whose sum is σ = 171617280. Its totient is φ = 107260560.

The previous prime is 138545041. The next prime is 138545047. The reversal of 138545045 is 540545831.

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

It is not a de Polignac number, because 138545045 - 2² = 138545041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138544996 and 138545014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138545041) 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, 446765 + ... + 447074.

It is an arithmetic number, because the mean of its divisors is an integer number (21452160).

Almost surely, 2^138545045 is an apocalyptic number.

It is an amenable number.

138545045 is a deficient number, since it is larger than the sum of its proper divisors (33072235).

138545045 is an equidigital number, since it uses as much as digits as its factorization.

138545045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893875.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 138545045 is about 11770.5159190241. The cubic root of 138545045 is about 517.4443700071. Note that the first 3 decimals are identical.

The spelling of 138545045 in words is "one hundred thirty-eight million, five hundred forty-five thousand, forty-five".