4645637987 has 2 divisors, whose sum is σ = 4645637988. Its totient is φ = 4645637986.

The previous prime is 4645637981. The next prime is 4645637989. The reversal of 4645637987 is 7897365464.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4645637987 is a prime.

Together with 4645637989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4645637981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322818993 + 2322818994.

It is an arithmetic number, because the mean of its divisors is an integer number (2322818994).

Almost surely, 2^4645637987 is an apocalyptic number.

4645637987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4645637987 is an equidigital number, since it uses as much as digits as its factorization.

4645637987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 59.

The square root of 4645637987 is about 68158.9171495557. The cubic root of 4645637987 is about 1668.5854596435.

The spelling of 4645637987 in words is "four billion, six hundred forty-five million, six hundred thirty-seven thousand, nine hundred eighty-seven".