1528132715 has 4 divisors (see below), whose sum is σ = 1833759264. Its totient is φ = 1222506168.

The previous prime is 1528132691. The next prime is 1528132733. The reversal of 1528132715 is 5172318251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5172318251 = 199 ⋅25991549.

It is a cyclic number.

It is not a de Polignac number, because 1528132715 - 2⁶ = 1528132651 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152813267 + ... + 152813276.

It is an arithmetic number, because the mean of its divisors is an integer number (458439816).

Almost surely, 2^1528132715 is an apocalyptic number.

1528132715 is a deficient number, since it is larger than the sum of its proper divisors (305626549).

1528132715 is an equidigital number, since it uses as much as digits as its factorization.

1528132715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305626548.

The product of its digits is 16800, while the sum is 35.

The square root of 1528132715 is about 39091.3381070538. The cubic root of 1528132715 is about 1151.8263896021.

The spelling of 1528132715 in words is "one billion, five hundred twenty-eight million, one hundred thirty-two thousand, seven hundred fifteen".