138602535 has 8 divisors (see below), whose sum is σ = 221764080. Its totient is φ = 73921344.

The previous prime is 138602533. The next prime is 138602537. The reversal of 138602535 is 535206831.

It is an interprime number because it is at equal distance from previous prime (138602533) and next prime (138602537).

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

It is not a de Polignac number, because 138602535 - 2¹ = 138602533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138602496 and 138602505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138602533) by changing a digit.

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, 4620070 + ... + 4620099.

It is an arithmetic number, because the mean of its divisors is an integer number (27720510).

Almost surely, 2^138602535 is an apocalyptic number.

138602535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138602535 is a deficient number, since it is larger than the sum of its proper divisors (83161545).

138602535 is an equidigital number, since it uses as much as digits as its factorization.

138602535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240177.

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

The square root of 138602535 is about 11772.9577846861. The cubic root of 138602535 is about 517.5159322034.

The spelling of 138602535 in words is "one hundred thirty-eight million, six hundred two thousand, five hundred thirty-five".