993435608378 has 4 divisors (see below), whose sum is σ = 1490153412570. Its totient is φ = 496717804188.

The previous prime is 993435608371. The next prime is 993435608401. The reversal of 993435608378 is 873806534399.

993435608378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 630558281929 + 362877326449 = 794077^2 + 602393^2 .

It is not an unprimeable number, because it can be changed into a prime (993435608371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248358902093 + ... + 248358902096.

Almost surely, 2^993435608378 is an apocalyptic number.

993435608378 is a deficient number, since it is larger than the sum of its proper divisors (496717804192).

993435608378 is a wasteful number, since it uses less digits than its factorization.

993435608378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496717804191.

The product of its (nonzero) digits is 117573120, while the sum is 65.

The spelling of 993435608378 in words is "nine hundred ninety-three billion, four hundred thirty-five million, six hundred eight thousand, three hundred seventy-eight".