1528115013 has 12 divisors (see below), whose sum is σ = 2218484268. Its totient is φ = 1013570880.

The previous prime is 1528114999. The next prime is 1528115021. The reversal of 1528115013 is 3105118251.

1528115013 is a `hidden beast` number, since 152 + 8 + 1 + 1 + 501 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 737774244 + 790340769 = 27162^2 + 28113^2 .

It is not a de Polignac number, because 1528115013 - 2²¹ = 1526017861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1528115713) 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, 429168 + ... + 432713.

It is an arithmetic number, because the mean of its divisors is an integer number (184873689).

Almost surely, 2^1528115013 is an apocalyptic number.

It is an amenable number.

1528115013 is a deficient number, since it is larger than the sum of its proper divisors (690369255).

1528115013 is a wasteful number, since it uses less digits than its factorization.

1528115013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862084 (or 862081 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 1528115013 is about 39091.1116879528. Note that the first 3 decimals coincide. The cubic root of 1528115013 is about 1151.8219419715.

The spelling of 1528115013 in words is "one billion, five hundred twenty-eight million, one hundred fifteen thousand, thirteen".