801993378 has 16 divisors (see below), whose sum is σ = 1604270016. Its totient is φ = 267283920.

The previous prime is 801993373. The next prime is 801993407. The reversal of 801993378 is 873399108.

It is not an unprimeable number, because it can be changed into a prime (801993373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49500 + ... + 63672.

It is an arithmetic number, because the mean of its divisors is an integer number (100266876).

Almost surely, 2^801993378 is an apocalyptic number.

801993378 is an abundant number, since it is smaller than the sum of its proper divisors (802276638).

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

801993378 is a wasteful number, since it uses less digits than its factorization.

801993378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23609.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 801993378 is about 28319.4876012967. The cubic root of 801993378 is about 929.0881639599.

The spelling of 801993378 in words is "eight hundred one million, nine hundred ninety-three thousand, three hundred seventy-eight".