1152214391 has 2 divisors, whose sum is σ = 1152214392. Its totient is φ = 1152214390.

The previous prime is 1152214387. The next prime is 1152214411. The reversal of 1152214391 is 1934122511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1152214391 - 2² = 1152214387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1152214351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576107195 + 576107196.

It is an arithmetic number, because the mean of its divisors is an integer number (576107196).

Almost surely, 2^1152214391 is an apocalyptic number.

1152214391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1152214391 is an equidigital number, since it uses as much as digits as its factorization.

1152214391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 1152214391 is about 33944.2836277333. The cubic root of 1152214391 is about 1048.3615841323.

The spelling of 1152214391 in words is "one billion, one hundred fifty-two million, two hundred fourteen thousand, three hundred ninety-one".