2938218493 has 4 divisors (see below), whose sum is σ = 3357964000. Its totient is φ = 2518472988.

The previous prime is 2938218487. The next prime is 2938218523. The reversal of 2938218493 is 3948128392.

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 2938218493 - 2⁵ = 2938218461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2938218403) 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, 209872743 + ... + 209872756.

It is an arithmetic number, because the mean of its divisors is an integer number (839491000).

Almost surely, 2^2938218493 is an apocalyptic number.

It is an amenable number.

2938218493 is a deficient number, since it is larger than the sum of its proper divisors (419745507).

2938218493 is an equidigital number, since it uses as much as digits as its factorization.

2938218493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419745506.

The product of its digits is 746496, while the sum is 49.

The square root of 2938218493 is about 54205.3363885882. The cubic root of 2938218493 is about 1432.2803353783.

The spelling of 2938218493 in words is "two billion, nine hundred thirty-eight million, two hundred eighteen thousand, four hundred ninety-three".