138344835 has 8 divisors (see below), whose sum is σ = 221351760. Its totient is φ = 73783904.

The previous prime is 138344831. The next prime is 138344873. The reversal of 138344835 is 538443831.

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 138344835 - 2² = 138344831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138344793 and 138344802.

It is not an unprimeable number, because it can be changed into a prime (138344831) 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, 4611480 + ... + 4611509.

It is an arithmetic number, because the mean of its divisors is an integer number (27668970).

Almost surely, 2^138344835 is an apocalyptic number.

138344835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138344835 is a deficient number, since it is larger than the sum of its proper divisors (83006925).

138344835 is an equidigital number, since it uses as much as digits as its factorization.

138344835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222997.

The product of its digits is 138240, while the sum is 39.

The square root of 138344835 is about 11762.0081193647. The cubic root of 138344835 is about 517.1949986926.

The spelling of 138344835 in words is "one hundred thirty-eight million, three hundred forty-four thousand, eight hundred thirty-five".