1993359378 has 16 divisors (see below), whose sum is σ = 4221231840. Its totient is φ = 625367616.

The previous prime is 1993359367. The next prime is 1993359397. The reversal of 1993359378 is 8739533991.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9771268 + ... + 9771471.

It is an arithmetic number, because the mean of its divisors is an integer number (263826990).

Almost surely, 2^1993359378 is an apocalyptic number.

1993359378 is an abundant number, since it is smaller than the sum of its proper divisors (2227872462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1993359378 is a wasteful number, since it uses less digits than its factorization.

1993359378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19542761.

The product of its digits is 5511240, while the sum is 57.

The square root of 1993359378 is about 44647.0534078118. The cubic root of 1993359378 is about 1258.5250604729.

The spelling of 1993359378 in words is "one billion, nine hundred ninety-three million, three hundred fifty-nine thousand, three hundred seventy-eight".