368138109 has 4 divisors (see below), whose sum is σ = 490850816. Its totient is φ = 245425404.

The previous prime is 368138107. The next prime is 368138137. The reversal of 368138109 is 901831863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 368138109 - 2¹ = 368138107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368138107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61356349 + ... + 61356354.

It is an arithmetic number, because the mean of its divisors is an integer number (122712704).

Almost surely, 2^368138109 is an apocalyptic number.

It is an amenable number.

368138109 is a deficient number, since it is larger than the sum of its proper divisors (122712707).

368138109 is a wasteful number, since it uses less digits than its factorization.

368138109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122712706.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 368138109 is about 19186.9254702258. The cubic root of 368138109 is about 716.6992099398.

The spelling of 368138109 in words is "three hundred sixty-eight million, one hundred thirty-eight thousand, one hundred nine".