1531652013 has 12 divisors (see below), whose sum is σ = 2212798588. Its totient is φ = 1020911040.

The previous prime is 1531652011. The next prime is 1531652029. The reversal of 1531652013 is 3102561351.

1531652013 is a `hidden beast` number, since 1 + 5 + 3 + 1 + 652 + 0 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 419963049 + 1111688964 = 20493^2 + 33342^2 .

It is not a de Polignac number, because 1531652013 - 2¹ = 1531652011 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 (1531652011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49131 + ... + 74007.

Almost surely, 2^1531652013 is an apocalyptic number.

It is an amenable number.

1531652013 is a deficient number, since it is larger than the sum of its proper divisors (681146575).

1531652013 is a wasteful number, since it uses less digits than its factorization.

1531652013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31724 (or 31721 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1531652013 is about 39136.3260028327. The cubic root of 1531652013 is about 1152.7099325056.

The spelling of 1531652013 in words is "one billion, five hundred thirty-one million, six hundred fifty-two thousand, thirteen".