2445943993 has 4 divisors (see below), whose sum is σ = 2552289408. Its totient is φ = 2339598580.

The previous prime is 2445943963. The next prime is 2445944141. The reversal of 2445943993 is 3993495442.

It is a happy number.

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 2445943993 - 2⁵ = 2445943961 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 2445943993.

It is not an unprimeable number, because it can be changed into a prime (2445943963) 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, 53172673 + ... + 53172718.

It is an arithmetic number, because the mean of its divisors is an integer number (638072352).

Almost surely, 2^2445943993 is an apocalyptic number.

2445943993 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2445943993 is a deficient number, since it is larger than the sum of its proper divisors (106345415).

2445943993 is a wasteful number, since it uses less digits than its factorization.

2445943993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106345414.

The product of its digits is 4199040, while the sum is 52.

The square root of 2445943993 is about 49456.4858537280. The cubic root of 2445943993 is about 1347.3554067322.

The spelling of 2445943993 in words is "two billion, four hundred forty-five million, nine hundred forty-three thousand, nine hundred ninety-three".