7194987838 has 8 divisors (see below), whose sum is σ = 10792843488. Its totient is φ = 3597373344.

The previous prime is 7194987757. The next prime is 7194987913. The reversal of 7194987838 is 8387894917.

It is a happy number.

7194987838 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7194987838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75195 + ... + 141577.

It is an arithmetic number, because the mean of its divisors is an integer number (1349105436).

Almost surely, 2^7194987838 is an apocalyptic number.

7194987838 is a deficient number, since it is larger than the sum of its proper divisors (3597855650).

7194987838 is a wasteful number, since it uses less digits than its factorization.

7194987838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120578.

The product of its digits is 24385536, while the sum is 64.

The square root of 7194987838 is about 84823.2741527937. The cubic root of 7194987838 is about 1930.5305921236.

The spelling of 7194987838 in words is "seven billion, one hundred ninety-four million, nine hundred eighty-seven thousand, eight hundred thirty-eight".