1315520733 has 16 divisors (see below), whose sum is σ = 1769366016. Its totient is φ = 869359920.

The previous prime is 1315520729. The next prime is 1315520753. The reversal of 1315520733 is 3370255131.

It is not a de Polignac number, because 1315520733 - 2² = 1315520729 is a prime.

It is a super-3 number, since 3×1315520733³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1315520733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315520753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630510 + ... + 632592.

It is an arithmetic number, because the mean of its divisors is an integer number (110585376).

Almost surely, 2^1315520733 is an apocalyptic number.

It is an amenable number.

1315520733 is a deficient number, since it is larger than the sum of its proper divisors (453845283).

1315520733 is a wasteful number, since it uses less digits than its factorization.

1315520733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 1315520733 is about 36270.1079816424. The cubic root of 1315520733 is about 1095.7191006403.

Adding to 1315520733 its reverse (3370255131), we get a palindrome (4685775864).

It can be divided in two parts, 1315520 and 733, that added together give a triangular number (1316253 = T₁₆₂₂).

The spelling of 1315520733 in words is "one billion, three hundred fifteen million, five hundred twenty thousand, seven hundred thirty-three".