1201328587 has 2 divisors, whose sum is σ = 1201328588. Its totient is φ = 1201328586.

The previous prime is 1201328563. The next prime is 1201328603. The reversal of 1201328587 is 7858231021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201328587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201328537) by changing a digit.

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 as a sum of consecutive naturals, namely, 600664293 + 600664294.

It is an arithmetic number, because the mean of its divisors is an integer number (600664294).

Almost surely, 2^1201328587 is an apocalyptic number.

1201328587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201328587 is an equidigital number, since it uses as much as digits as its factorization.

1201328587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1201328587 is about 34660.1873480222. The cubic root of 1201328587 is about 1063.0506007494.

The spelling of 1201328587 in words is "one billion, two hundred one million, three hundred twenty-eight thousand, five hundred eighty-seven".