9801631008 has 72 divisors (see below), whose sum is σ = 30017506428. Its totient is φ = 3015885312.

The previous prime is 9801630989. The next prime is 9801631013. The reversal of 9801631008 is 8001361089.

It can be written as a sum of positive squares in 2 ways, for example, as 9774881424 + 26749584 = 98868^2 + 5172^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305235 + ... + 1312722.

Almost surely, 2^9801631008 is an apocalyptic number.

It is an amenable number.

9801631008 is an abundant number, since it is smaller than the sum of its proper divisors (20215875420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9801631008 is a wasteful number, since it uses less digits than its factorization.

9801631008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617986 (or 2617975 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 9801631008 is about 99003.1868577977. The cubic root of 9801631008 is about 2140.0936727856.

The spelling of 9801631008 in words is "nine billion, eight hundred one million, six hundred thirty-one thousand, eight".