9845451969 has 4 divisors (see below), whose sum is σ = 13127269296. Its totient is φ = 6563634644.

The previous prime is 9845451943. The next prime is 9845451983. The reversal of 9845451969 is 9691545489.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9845451969 - 2⁸ = 9845451713 is a prime.

It is a super-2 number, since 2×9845451969² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9845450969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640908659 + ... + 1640908664.

It is an arithmetic number, because the mean of its divisors is an integer number (3281817324).

Almost surely, 2^9845451969 is an apocalyptic number.

It is an amenable number.

9845451969 is a deficient number, since it is larger than the sum of its proper divisors (3281817327).

9845451969 is a wasteful number, since it uses less digits than its factorization.

9845451969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281817326.

The product of its digits is 13996800, while the sum is 60.

The square root of 9845451969 is about 99224.2509117605. The cubic root of 9845451969 is about 2143.2782294951.

The spelling of 9845451969 in words is "nine billion, eight hundred forty-five million, four hundred fifty-one thousand, nine hundred sixty-nine".