1101438139 has 4 divisors (see below), whose sum is σ = 1102198680. Its totient is φ = 1100677600.

The previous prime is 1101438127. The next prime is 1101438161. The reversal of 1101438139 is 9318341011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101438139 - 2⁷ = 1101438011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101438139.

It is not an unprimeable number, because it can be changed into a prime (1101438439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378094 + ... + 380995.

It is an arithmetic number, because the mean of its divisors is an integer number (275549670).

Almost surely, 2^1101438139 is an apocalyptic number.

1101438139 is a deficient number, since it is larger than the sum of its proper divisors (760541).

1101438139 is an equidigital number, since it uses as much as digits as its factorization.

1101438139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760540.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1101438139 is about 33187.9215830097. The cubic root of 1101438139 is about 1032.7297869081.

The spelling of 1101438139 in words is "one billion, one hundred one million, four hundred thirty-eight thousand, one hundred thirty-nine".