8331398945 has 16 divisors (see below), whose sum is σ = 10027238592. Its totient is φ = 6645447360.

The previous prime is 8331398903. The next prime is 8331398993. The reversal of 8331398945 is 5498931338.

It is not a de Polignac number, because 8331398945 - 2⁸ = 8331398689 is a prime.

It is a super-2 number, since 2×8331398945² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2970914 + ... + 2973716.

It is an arithmetic number, because the mean of its divisors is an integer number (626702412).

Almost surely, 2^8331398945 is an apocalyptic number.

It is an amenable number.

8331398945 is a deficient number, since it is larger than the sum of its proper divisors (1695839647).

8331398945 is a wasteful number, since it uses less digits than its factorization.

8331398945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352.

The product of its digits is 2799360, while the sum is 53.

The square root of 8331398945 is about 91276.4972213549. The cubic root of 8331398945 is about 2027.2437818438.

The spelling of 8331398945 in words is "eight billion, three hundred thirty-one million, three hundred ninety-eight thousand, nine hundred forty-five".