1145201987 has 2 divisors, whose sum is σ = 1145201988. Its totient is φ = 1145201986.

The previous prime is 1145201921. The next prime is 1145202011. The reversal of 1145201987 is 7891025411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1145201987 - 2¹⁰ = 1145200963 is a prime.

It is a super-2 number, since 2×1145201987² = 2622975182057496338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145201987.

It is not a weakly prime, because it can be changed into another prime (1145201917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572600993 + 572600994.

It is an arithmetic number, because the mean of its divisors is an integer number (572600994).

Almost surely, 2^1145201987 is an apocalyptic number.

1145201987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145201987 is an equidigital number, since it uses as much as digits as its factorization.

1145201987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1145201987 is about 33840.8331309972. The cubic root of 1145201987 is about 1046.2304704765.

The spelling of 1145201987 in words is "one billion, one hundred forty-five million, two hundred one thousand, nine hundred eighty-seven".