1147321157 has 8 divisors (see below), whose sum is σ = 1169537184. Its totient is φ = 1125126288.

The previous prime is 1147321127. The next prime is 1147321181. The reversal of 1147321157 is 7511237411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1147321157 - 2⁶ = 1147321093 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 (1147321127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144698 + ... + 152420.

It is an arithmetic number, because the mean of its divisors is an integer number (146192148).

Almost surely, 2^1147321157 is an apocalyptic number.

It is an amenable number.

1147321157 is a deficient number, since it is larger than the sum of its proper divisors (22216027).

1147321157 is an equidigital number, since it uses as much as digits as its factorization.

1147321157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579.

The product of its digits is 5880, while the sum is 32.

The square root of 1147321157 is about 33872.1295019962. The cubic root of 1147321157 is about 1046.8754146484.

Adding to 1147321157 its reverse (7511237411), we get a palindrome (8658558568).

The spelling of 1147321157 in words is "one billion, one hundred forty-seven million, three hundred twenty-one thousand, one hundred fifty-seven".