1315632733 has 4 divisors (see below), whose sum is σ = 1315707840. Its totient is φ = 1315557628.

The previous prime is 1315632719. The next prime is 1315632739. The reversal of 1315632733 is 3372365131.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3372365131 = 1013 ⋅3329087.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315632733 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 (1315632739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4188 + ... + 51466.

It is an arithmetic number, because the mean of its divisors is an integer number (328926960).

Almost surely, 2^1315632733 is an apocalyptic number.

It is an amenable number.

1315632733 is a deficient number, since it is larger than the sum of its proper divisors (75107).

1315632733 is an equidigital number, since it uses as much as digits as its factorization.

1315632733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75106.

The product of its digits is 34020, while the sum is 34.

The square root of 1315632733 is about 36271.6519199223. The cubic root of 1315632733 is about 1095.7501953122.

Adding to 1315632733 its reverse (3372365131), we get a palindrome (4687997864).

The spelling of 1315632733 in words is "one billion, three hundred fifteen million, six hundred thirty-two thousand, seven hundred thirty-three".