1152214309 has 4 divisors (see below), whose sum is σ = 1156595616. Its totient is φ = 1147833004.

The previous prime is 1152214277. The next prime is 1152214319. The reversal of 1152214309 is 9034122511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1152214309 - 2⁵ = 1152214277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152214319) 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, 2190259 + ... + 2190784.

It is an arithmetic number, because the mean of its divisors is an integer number (289148904).

Almost surely, 2^1152214309 is an apocalyptic number.

It is an amenable number.

1152214309 is a deficient number, since it is larger than the sum of its proper divisors (4381307).

1152214309 is an equidigital number, since it uses as much as digits as its factorization.

1152214309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381306.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1152214309 is about 33944.2824198715. The cubic root of 1152214309 is about 1048.3615592626.

The spelling of 1152214309 in words is "one billion, one hundred fifty-two million, two hundred fourteen thousand, three hundred nine".