8461881603 has 24 divisors (see below), whose sum is σ = 14078824448. Its totient is φ = 4797282672.

The previous prime is 8461881599. The next prime is 8461881641. The reversal of 8461881603 is 3061881648.

It is a happy number.

It is not a de Polignac number, because 8461881603 - 2² = 8461881599 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8461881683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520801 + ... + 536802.

Almost surely, 2^8461881603 is an apocalyptic number.

8461881603 is a deficient number, since it is larger than the sum of its proper divisors (5616942845).

8461881603 is a wasteful number, since it uses less digits than its factorization.

8461881603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057743 (or 1057740 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8461881603 is about 91988.4862523566. The cubic root of 8461881603 is about 2037.7722704287.

Adding to 8461881603 its sum of digits (45), we get a palindrome (8461881648).

The spelling of 8461881603 in words is "eight billion, four hundred sixty-one million, eight hundred eighty-one thousand, six hundred three".