1152732397 has 8 divisors (see below), whose sum is σ = 1193707800. Its totient is φ = 1111838784.

The previous prime is 1152732367. The next prime is 1152732437. The reversal of 1152732397 is 7932372511.

It can be written as a sum of positive squares in 4 ways, for example, as 412130601 + 740601796 = 20301^2 + 27214^2 .

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 1152732397 - 2¹¹ = 1152730349 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 (1152732367) 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, 8979 + ... + 48847.

It is an arithmetic number, because the mean of its divisors is an integer number (149213475).

Almost surely, 2^1152732397 is an apocalyptic number.

It is an amenable number.

1152732397 is a deficient number, since it is larger than the sum of its proper divisors (40975403).

1152732397 is an equidigital number, since it uses as much as digits as its factorization.

1152732397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40895.

The product of its digits is 79380, while the sum is 40.

The square root of 1152732397 is about 33951.9130094314. The cubic root of 1152732397 is about 1048.5186660763.

The spelling of 1152732397 in words is "one billion, one hundred fifty-two million, seven hundred thirty-two thousand, three hundred ninety-seven".