4505378987 has 4 divisors (see below), whose sum is σ = 4505667720. Its totient is φ = 4505090256.

The previous prime is 4505378957. The next prime is 4505379023. The reversal of 4505378987 is 7898735054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4505378987 - 2¹⁸ = 4505116843 is a prime.

It is a super-2 number, since 2×4505378987² = 40596879633002292338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4505378957) 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 in 3 ways as a sum of consecutive naturals, for example, 119537 + ... + 152642.

It is an arithmetic number, because the mean of its divisors is an integer number (1126416930).

Almost surely, 2^4505378987 is an apocalyptic number.

4505378987 is a deficient number, since it is larger than the sum of its proper divisors (288733).

4505378987 is a wasteful number, since it uses less digits than its factorization.

4505378987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288732.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The square root of 4505378987 is about 67122.1199531123. The cubic root of 4505378987 is about 1651.6211782132.

The spelling of 4505378987 in words is "four billion, five hundred five million, three hundred seventy-eight thousand, nine hundred eighty-seven".