138513345 has 8 divisors (see below), whose sum is σ = 221621376. Its totient is φ = 73873776.

The previous prime is 138513341. The next prime is 138513379. The reversal of 138513345 is 543315831.

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

It is not a de Polignac number, because 138513345 - 2² = 138513341 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (138513341) 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, 4617097 + ... + 4617126.

It is an arithmetic number, because the mean of its divisors is an integer number (27702672).

Almost surely, 2^138513345 is an apocalyptic number.

138513345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138513345 is a deficient number, since it is larger than the sum of its proper divisors (83108031).

138513345 is an equidigital number, since it uses as much as digits as its factorization.

138513345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9234231.

The product of its digits is 21600, while the sum is 33.

The square root of 138513345 is about 11769.1692570037. The cubic root of 138513345 is about 517.4049021269.

The spelling of 138513345 in words is "one hundred thirty-eight million, five hundred thirteen thousand, three hundred forty-five".