138137133 has 8 divisors (see below), whose sum is σ = 187658208. Its totient is φ = 90353744.

The previous prime is 138137093. The next prime is 138137137. The reversal of 138137133 is 331731831.

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 138137133 - 2¹³ = 138128941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138137133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138137137) 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, 434235 + ... + 434552.

It is an arithmetic number, because the mean of its divisors is an integer number (23457276).

Almost surely, 2^138137133 is an apocalyptic number.

It is an amenable number.

138137133 is a deficient number, since it is larger than the sum of its proper divisors (49521075).

138137133 is an equidigital number, since it uses as much as digits as its factorization.

138137133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868843.

The product of its digits is 4536, while the sum is 30.

The square root of 138137133 is about 11753.1754432579. The cubic root of 138137133 is about 516.9360413330.

Adding to 138137133 its reverse (331731831), we get a palindrome (469868964).

The spelling of 138137133 in words is "one hundred thirty-eight million, one hundred thirty-seven thousand, one hundred thirty-three".