1152195691 has 4 divisors (see below), whose sum is σ = 1165141800. Its totient is φ = 1139249584.

The previous prime is 1152195679. The next prime is 1152195713. The reversal of 1152195691 is 1965912511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1152195691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152195641) 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, 6472921 + ... + 6473098.

It is an arithmetic number, because the mean of its divisors is an integer number (291285450).

Almost surely, 2^1152195691 is an apocalyptic number.

1152195691 is a deficient number, since it is larger than the sum of its proper divisors (12946109).

1152195691 is an equidigital number, since it uses as much as digits as its factorization.

1152195691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12946108.

The product of its digits is 24300, while the sum is 40.

The square root of 1152195691 is about 33944.0081752288. The cubic root of 1152195691 is about 1048.3559125987.

The spelling of 1152195691 in words is "one billion, one hundred fifty-two million, one hundred ninety-five thousand, six hundred ninety-one".