1152021139 has 2 divisors, whose sum is σ = 1152021140. Its totient is φ = 1152021138.

The previous prime is 1152021137. The next prime is 1152021187. The reversal of 1152021139 is 9311202511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1152021139 - 2¹ = 1152021137 is a prime.

Together with 1152021137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1152021137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576010569 + 576010570.

It is an arithmetic number, because the mean of its divisors is an integer number (576010570).

Almost surely, 2^1152021139 is an apocalyptic number.

1152021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152021139 is an equidigital number, since it uses as much as digits as its factorization.

1152021139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1152021139 is about 33941.4369024059. The cubic root of 1152021139 is about 1048.3029696643.

The spelling of 1152021139 in words is "one billion, one hundred fifty-two million, twenty-one thousand, one hundred thirty-nine".