4721825778 has 8 divisors (see below), whose sum is σ = 9443651568. Its totient is φ = 1573941924.

The previous prime is 4721825777. The next prime is 4721825783. The reversal of 4721825778 is 8775281274.

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

4721825778 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 4721825778.

It is not an unprimeable number, because it can be changed into a prime (4721825777) 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, 393485476 + ... + 393485487.

It is an arithmetic number, because the mean of its divisors is an integer number (1180456446).

Almost surely, 2^4721825778 is an apocalyptic number.

4721825778 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.

4721825778 is a wasteful number, since it uses less digits than its factorization.

4721825778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786970968.

The product of its digits is 1756160, while the sum is 51.

The square root of 4721825778 is about 68715.5424776666. The cubic root of 4721825778 is about 1677.6575652364.

The spelling of 4721825778 in words is "four billion, seven hundred twenty-one million, eight hundred twenty-five thousand, seven hundred seventy-eight".