4401630778 has 16 divisors (see below), whose sum is σ = 6782657544. Its totient is φ = 2140776000.

The previous prime is 4401630743. The next prime is 4401630787. The reversal of 4401630778 is 8770361044.

It can be written as a sum of positive squares in 4 ways, for example, as 3375261409 + 1026369369 = 58097^2 + 32037^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4401630778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513528 + ... + 522028.

Almost surely, 2^4401630778 is an apocalyptic number.

4401630778 is a deficient number, since it is larger than the sum of its proper divisors (2381026766).

4401630778 is a wasteful number, since it uses less digits than its factorization.

4401630778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15537.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 4401630778 is about 66344.7871200142. The cubic root of 4401630778 is about 1638.8449603022.

The spelling of 4401630778 in words is "four billion, four hundred one million, six hundred thirty thousand, seven hundred seventy-eight".