9820467649 has 6 divisors (see below), whose sum is σ = 10147476930. Its totient is φ = 9503677440.

The previous prime is 9820467599. The next prime is 9820467689. The reversal of 9820467649 is 9467640289.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9687480625 + 132987024 = 98425^2 + 11532^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9820467649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9820467649.

It is not an unprimeable number, because it can be changed into a prime (9820467689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5108544 + ... + 5110465.

It is an arithmetic number, because the mean of its divisors is an integer number (1691246155).

Almost surely, 2^9820467649 is an apocalyptic number.

It is an amenable number.

9820467649 is a deficient number, since it is larger than the sum of its proper divisors (327009281).

9820467649 is a wasteful number, since it uses less digits than its factorization.

9820467649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219071 (or 10219040 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The square root of 9820467649 is about 99098.2726842401. The cubic root of 9820467649 is about 2141.4637298004.

The spelling of 9820467649 in words is "nine billion, eight hundred twenty million, four hundred sixty-seven thousand, six hundred forty-nine".