1139152309 has 2 divisors, whose sum is σ = 1139152310. Its totient is φ = 1139152308.

The previous prime is 1139152297. The next prime is 1139152331. The reversal of 1139152309 is 9032519311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712729809 + 426422500 = 26697^2 + 20650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139152309 - 2¹¹ = 1139150261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139152409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569576154 + 569576155.

It is an arithmetic number, because the mean of its divisors is an integer number (569576155).

Almost surely, 2^1139152309 is an apocalyptic number.

It is an amenable number.

1139152309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139152309 is an equidigital number, since it uses as much as digits as its factorization.

1139152309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 1139152309 is about 33751.3304774790. The cubic root of 1139152309 is about 1044.3849341799.

The spelling of 1139152309 in words is "one billion, one hundred thirty-nine million, one hundred fifty-two thousand, three hundred nine".