4551432649 has 4 divisors (see below), whose sum is σ = 4563133380. Its totient is φ = 4539731920.

The previous prime is 4551432647. The next prime is 4551432659. The reversal of 4551432649 is 9462341554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9462341554 = 2 ⋅4731170777.

It can be written as a sum of positive squares in 2 ways, for example, as 1401978249 + 3149454400 = 37443^2 + 56120^2 .

It is a cyclic number.

It is not a de Polignac number, because 4551432649 - 2¹ = 4551432647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4551432647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5849782 + ... + 5850559.

It is an arithmetic number, because the mean of its divisors is an integer number (1140783345).

Almost surely, 2^4551432649 is an apocalyptic number.

It is an amenable number.

4551432649 is a deficient number, since it is larger than the sum of its proper divisors (11700731).

4551432649 is a wasteful number, since it uses less digits than its factorization.

4551432649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700730.

The product of its digits is 518400, while the sum is 43.

The square root of 4551432649 is about 67464.3064812794. The cubic root of 4551432649 is about 1657.2296959925.

The spelling of 4551432649 in words is "four billion, five hundred fifty-one million, four hundred thirty-two thousand, six hundred forty-nine".