9801494637 has 16 divisors (see below), whose sum is σ = 14276861760. Its totient is φ = 5931907200.

The previous prime is 9801494609. The next prime is 9801494639. The reversal of 9801494637 is 7364941089.

It is not a de Polignac number, because 9801494637 - 2³¹ = 7654010989 is a prime.

It is a super-3 number, since 3×9801494637³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9801494637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801494639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186064 + ... + 232857.

It is an arithmetic number, because the mean of its divisors is an integer number (892303860).

Almost surely, 2^9801494637 is an apocalyptic number.

It is an amenable number.

9801494637 is a deficient number, since it is larger than the sum of its proper divisors (4475367123).

9801494637 is a wasteful number, since it uses less digits than its factorization.

9801494637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419644.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 9801494637 is about 99002.4981351481. The cubic root of 9801494637 is about 2140.0837476324.

The spelling of 9801494637 in words is "nine billion, eight hundred one million, four hundred ninety-four thousand, six hundred thirty-seven".