2388661393 has 4 divisors (see below), whose sum is σ = 2393648640. Its totient is φ = 2383674148.

The previous prime is 2388661367. The next prime is 2388661403. The reversal of 2388661393 is 3931668832.

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 2388661393 - 2¹⁷ = 2388530321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2388661333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2492905 + ... + 2493862.

It is an arithmetic number, because the mean of its divisors is an integer number (598412160).

Almost surely, 2^2388661393 is an apocalyptic number.

It is an amenable number.

2388661393 is a deficient number, since it is larger than the sum of its proper divisors (4987247).

2388661393 is an equidigital number, since it uses as much as digits as its factorization.

2388661393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987246.

The product of its digits is 1119744, while the sum is 49.

The square root of 2388661393 is about 48873.9336763474. The cubic root of 2388661393 is about 1336.7541162541.

The spelling of 2388661393 in words is "two billion, three hundred eighty-eight million, six hundred sixty-one thousand, three hundred ninety-three".