1663052987 has 2 divisors, whose sum is σ = 1663052988. Its totient is φ = 1663052986.

The previous prime is 1663052983. The next prime is 1663053031. The reversal of 1663052987 is 7892503661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1663052987 - 2² = 1663052983 is a prime.

It is not a weakly prime, because it can be changed into another prime (1663052981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831526493 + 831526494.

It is an arithmetic number, because the mean of its divisors is an integer number (831526494).

Almost surely, 2^1663052987 is an apocalyptic number.

1663052987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663052987 is an equidigital number, since it uses as much as digits as its factorization.

1663052987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 1663052987 is about 40780.5466736286. The cubic root of 1663052987 is about 1184.7735832378.

The spelling of 1663052987 in words is "one billion, six hundred sixty-three million, fifty-two thousand, nine hundred eighty-seven".