1528642987 has 2 divisors, whose sum is σ = 1528642988. Its totient is φ = 1528642986.

The previous prime is 1528642963. The next prime is 1528643003. The reversal of 1528642987 is 7892468251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1528642987 - 2¹⁵ = 1528610219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1528642187) 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 as a sum of consecutive naturals, namely, 764321493 + 764321494.

It is an arithmetic number, because the mean of its divisors is an integer number (764321494).

Almost surely, 2^1528642987 is an apocalyptic number.

1528642987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1528642987 is an equidigital number, since it uses as much as digits as its factorization.

1528642987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The square root of 1528642987 is about 39097.8642255559. The cubic root of 1528642987 is about 1151.9545807690.

The spelling of 1528642987 in words is "one billion, five hundred twenty-eight million, six hundred forty-two thousand, nine hundred eighty-seven".