138202849 has 8 divisors (see below), whose sum is σ = 141730560. Its totient is φ = 134719200.

The previous prime is 138202847. The next prime is 138202891. The reversal of 138202849 is 948202831.

138202849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138202849 - 2¹ = 138202847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138202847) 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, 4617 + ... + 17254.

It is an arithmetic number, because the mean of its divisors is an integer number (17716320).

Almost surely, 2^138202849 is an apocalyptic number.

It is an amenable number.

138202849 is a deficient number, since it is larger than the sum of its proper divisors (3527711).

138202849 is an equidigital number, since it uses as much as digits as its factorization.

138202849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22031.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 138202849 is about 11755.9707808415. The cubic root of 138202849 is about 517.0180023587.

The spelling of 138202849 in words is "one hundred thirty-eight million, two hundred two thousand, eight hundred forty-nine".