4531781465 has 16 divisors (see below), whose sum is σ = 5475031488. Its totient is φ = 3600906816.

The previous prime is 4531781437. The next prime is 4531781479. The reversal of 4531781465 is 5641871354.

It is a cyclic number.

It is not a de Polignac number, because 4531781465 - 2²⁰ = 4530732889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498299 + ... + 507311.

It is an arithmetic number, because the mean of its divisors is an integer number (342189468).

Almost surely, 2^4531781465 is an apocalyptic number.

It is an amenable number.

4531781465 is a deficient number, since it is larger than the sum of its proper divisors (943250023).

4531781465 is a wasteful number, since it uses less digits than its factorization.

4531781465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9688.

The product of its digits is 403200, while the sum is 44.

The square root of 4531781465 is about 67318.5075963512. The cubic root of 4531781465 is about 1654.8411800754.

The spelling of 4531781465 in words is "four billion, five hundred thirty-one million, seven hundred eighty-one thousand, four hundred sixty-five".