1618214987 has 2 divisors, whose sum is σ = 1618214988. Its totient is φ = 1618214986.

The previous prime is 1618214963. The next prime is 1618215037. The reversal of 1618214987 is 7894128161.

It is a weak prime.

It is an emirp because it is prime and its reverse (7894128161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1618214987 - 2¹⁰ = 1618213963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618264987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809107493 + 809107494.

It is an arithmetic number, because the mean of its divisors is an integer number (809107494).

Almost surely, 2^1618214987 is an apocalyptic number.

1618214987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618214987 is an equidigital number, since it uses as much as digits as its factorization.

1618214987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 47.

The square root of 1618214987 is about 40227.0429810594. The cubic root of 1618214987 is about 1174.0287702620.

The spelling of 1618214987 in words is "one billion, six hundred eighteen million, two hundred fourteen thousand, nine hundred eighty-seven".