4449261678 has 8 divisors (see below), whose sum is σ = 8898523368. Its totient is φ = 1483087224.

The previous prime is 4449261631. The next prime is 4449261683. The reversal of 4449261678 is 8761629444.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

4449261678 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 4449261678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370771801 + ... + 370771812.

It is an arithmetic number, because the mean of its divisors is an integer number (1112315421).

Almost surely, 2^4449261678 is an apocalyptic number.

4449261678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4449261678 is a wasteful number, since it uses less digits than its factorization.

4449261678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741543618.

The product of its digits is 2322432, while the sum is 51.

The square root of 4449261678 is about 66702.7861337141. The cubic root of 4449261678 is about 1644.7351843806.

The spelling of 4449261678 in words is "four billion, four hundred forty-nine million, two hundred sixty-one thousand, six hundred seventy-eight".