4645531531 has 4 divisors (see below), whose sum is σ = 4753567192. Its totient is φ = 4537495872.

The previous prime is 4645531523. The next prime is 4645531549. The reversal of 4645531531 is 1351355464.

4645531531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4645531531 - 2³ = 4645531523 is a prime.

It is a super-2 number, since 2×4645531531² = 43161926411030407922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4645531591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54017766 + ... + 54017851.

It is an arithmetic number, because the mean of its divisors is an integer number (1188391798).

Almost surely, 2^4645531531 is an apocalyptic number.

4645531531 is a deficient number, since it is larger than the sum of its proper divisors (108035661).

4645531531 is a wasteful number, since it uses less digits than its factorization.

4645531531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108035660.

The product of its digits is 108000, while the sum is 37.

The square root of 4645531531 is about 68158.1362054451. The cubic root of 4645531531 is about 1668.5727141899.

Adding to 4645531531 its reverse (1351355464), we get a palindrome (5996886995).

The spelling of 4645531531 in words is "four billion, six hundred forty-five million, five hundred thirty-one thousand, five hundred thirty-one".