138545995 has 8 divisors (see below), whose sum is σ = 190005984. Its totient is φ = 95002944.

The previous prime is 138545977. The next prime is 138545999. The reversal of 138545995 is 599545831.

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 138545995 - 2⁹ = 138545483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138545999) 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, 1979194 + ... + 1979263.

It is an arithmetic number, because the mean of its divisors is an integer number (23750748).

Almost surely, 2^138545995 is an apocalyptic number.

138545995 is a deficient number, since it is larger than the sum of its proper divisors (51459989).

138545995 is an equidigital number, since it uses as much as digits as its factorization.

138545995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958469.

The product of its digits is 972000, while the sum is 49.

The square root of 138545995 is about 11770.5562740255. The cubic root of 138545995 is about 517.4455527056.

The spelling of 138545995 in words is "one hundred thirty-eight million, five hundred forty-five thousand, nine hundred ninety-five".