1005145187 has 2 divisors, whose sum is σ = 1005145188. Its totient is φ = 1005145186.

The previous prime is 1005145177. The next prime is 1005145223. The reversal of 1005145187 is 7815415001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005145187 - 2⁶ = 1005145123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005145157) 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, 502572593 + 502572594.

It is an arithmetic number, because the mean of its divisors is an integer number (502572594).

Almost surely, 2^1005145187 is an apocalyptic number.

1005145187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005145187 is an equidigital number, since it uses as much as digits as its factorization.

1005145187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 1005145187 is about 31704.0247760438. The cubic root of 1005145187 is about 1001.7121292737.

The spelling of 1005145187 in words is "one billion, five million, one hundred forty-five thousand, one hundred eighty-seven".