4381904890 has 60 divisors (see below), whose sum is σ = 8726558670. Its totient is φ = 1584209440.

The previous prime is 4381904873. The next prime is 4381904899. The reversal of 4381904890 is 984091834.

It can be written as a sum of positive squares in 3 ways, for example, as 4380718969 + 1185921 = 66187^2 + 1089^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4381904890.

It is not an unprimeable number, because it can be changed into a prime (4381904899) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 25328844 + ... + 25329016.

Almost surely, 2^4381904890 is an apocalyptic number.

4381904890 is a deficient number, since it is larger than the sum of its proper divisors (4344653780).

4381904890 is an frugal number, since it uses more digits than its factorization.

4381904890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 4381904890 is about 66195.9582603047. The cubic root of 4381904890 is about 1636.3931353259.

The spelling of 4381904890 in words is "four billion, three hundred eighty-one million, nine hundred four thousand, eight hundred ninety".