1004851987 has 2 divisors, whose sum is σ = 1004851988. Its totient is φ = 1004851986.

The previous prime is 1004851979. The next prime is 1004852029. The reversal of 1004851987 is 7891584001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1004851987 - 2³ = 1004851979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1004851387) 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, 502425993 + 502425994.

It is an arithmetic number, because the mean of its divisors is an integer number (502425994).

Almost surely, 2^1004851987 is an apocalyptic number.

1004851987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004851987 is an equidigital number, since it uses as much as digits as its factorization.

1004851987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1004851987 is about 31699.4004201972. The cubic root of 1004851987 is about 1001.6147202751.

The spelling of 1004851987 in words is "one billion, four million, eight hundred fifty-one thousand, nine hundred eighty-seven".