1392538109 has 8 divisors (see below), whose sum is σ = 1404764160. Its totient is φ = 1380332016.

The previous prime is 1392538099. The next prime is 1392538141. The reversal of 1392538109 is 9018352931.

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 1392538109 - 2¹⁶ = 1392472573 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 (1392538159) 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, 158147 + ... + 166719.

It is an arithmetic number, because the mean of its divisors is an integer number (175595520).

Almost surely, 2^1392538109 is an apocalyptic number.

It is an amenable number.

1392538109 is a deficient number, since it is larger than the sum of its proper divisors (12226051).

1392538109 is a wasteful number, since it uses less digits than its factorization.

1392538109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1392538109 is about 37316.7269331060. The cubic root of 1392538109 is about 1116.6978921790.

The spelling of 1392538109 in words is "one billion, three hundred ninety-two million, five hundred thirty-eight thousand, one hundred nine".