1139157271 has 16 divisors (see below), whose sum is σ = 1364373504. Its totient is φ = 929928384.

The previous prime is 1139157269. The next prime is 1139157281. The reversal of 1139157271 is 1727519311.

It is not a de Polignac number, because 1139157271 - 2¹ = 1139157269 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 1139157271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139157211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22330 + ... + 52696.

It is an arithmetic number, because the mean of its divisors is an integer number (85273344).

Almost surely, 2^1139157271 is an apocalyptic number.

1139157271 is a deficient number, since it is larger than the sum of its proper divisors (225216233).

1139157271 is a wasteful number, since it uses less digits than its factorization.

1139157271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30630.

The product of its digits is 13230, while the sum is 37.

The square root of 1139157271 is about 33751.4039856122. The cubic root of 1139157271 is about 1044.3864505796.

The spelling of 1139157271 in words is "one billion, one hundred thirty-nine million, one hundred fifty-seven thousand, two hundred seventy-one".