2643393445 has 24 divisors (see below), whose sum is σ = 4025416608. Its totient is φ = 1647828000.

The previous prime is 2643393433. The next prime is 2643393509. The reversal of 2643393445 is 5443933462.

It is not a de Polignac number, because 2643393445 - 2²³ = 2635004837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487731 + ... + 493120.

It is an arithmetic number, because the mean of its divisors is an integer number (167725692).

Almost surely, 2^2643393445 is an apocalyptic number.

It is an amenable number.

2643393445 is a deficient number, since it is larger than the sum of its proper divisors (1382023163).

2643393445 is a wasteful number, since it uses less digits than its factorization.

2643393445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980881 (or 980874 counting only the distinct ones).

The product of its digits is 933120, while the sum is 43.

The square root of 2643393445 is about 51413.9421266255. The cubic root of 2643393445 is about 1382.6765677385.

The spelling of 2643393445 in words is "two billion, six hundred forty-three million, three hundred ninety-three thousand, four hundred forty-five".