9881630554 has 16 divisors (see below), whose sum is σ = 15048917928. Its totient is φ = 4865882112.

The previous prime is 9881630543. The next prime is 9881630557. The reversal of 9881630554 is 4550361889.

It can be written as a sum of positive squares in 4 ways, for example, as 6798827025 + 3082803529 = 82455^2 + 55523^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9881630498 and 9881630507.

It is not an unprimeable number, because it can be changed into a prime (9881630557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103767 + ... + 174730.

Almost surely, 2^9881630554 is an apocalyptic number.

9881630554 is a deficient number, since it is larger than the sum of its proper divisors (5167287374).

9881630554 is a wasteful number, since it uses less digits than its factorization.

9881630554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278769.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 9881630554 is about 99406.3909112488. The cubic root of 9881630554 is about 2145.9002858138.

The spelling of 9881630554 in words is "nine billion, eight hundred eighty-one million, six hundred thirty thousand, five hundred fifty-four".