9819801245 has 8 divisors (see below), whose sum is σ = 11814056280. Its totient is φ = 7835644480.

The previous prime is 9819801223. The next prime is 9819801283. The reversal of 9819801245 is 5421089189.

It can be written as a sum of positive squares in 4 ways, for example, as 2652147001 + 7167654244 = 51499^2 + 84662^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9819801245 - 2⁶ = 9819801181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9819801245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2522426 + ... + 2526315.

It is an arithmetic number, because the mean of its divisors is an integer number (1476757035).

Almost surely, 2^9819801245 is an apocalyptic number.

It is an amenable number.

9819801245 is a deficient number, since it is larger than the sum of its proper divisors (1994255035).

9819801245 is a wasteful number, since it uses less digits than its factorization.

9819801245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049135.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 9819801245 is about 99094.9102880668. The cubic root of 9819801245 is about 2141.4152897353.

The spelling of 9819801245 in words is "nine billion, eight hundred nineteen million, eight hundred one thousand, two hundred forty-five".