1662002987 has 2 divisors, whose sum is σ = 1662002988. Its totient is φ = 1662002986.

The previous prime is 1662002981. The next prime is 1662003029. The reversal of 1662002987 is 7892002661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1662002987 - 2¹⁰ = 1662001963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662002981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831001493 + 831001494.

It is an arithmetic number, because the mean of its divisors is an integer number (831001494).

Almost surely, 2^1662002987 is an apocalyptic number.

1662002987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662002987 is an equidigital number, since it uses as much as digits as its factorization.

1662002987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1662002987 is about 40767.6708557161. The cubic root of 1662002987 is about 1184.5241876634.

The spelling of 1662002987 in words is "one billion, six hundred sixty-two million, two thousand, nine hundred eighty-seven".