819874394 has 8 divisors (see below), whose sum is σ = 1230186528. Its totient is φ = 409812220.

The previous prime is 819874387. The next prime is 819874411. The reversal of 819874394 is 493478918.

819874394 is digitally balanced in base 2, 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54062 + ... + 67545.

It is an arithmetic number, because the mean of its divisors is an integer number (153773316).

Almost surely, 2^819874394 is an apocalyptic number.

819874394 is a deficient number, since it is larger than the sum of its proper divisors (410312134).

819874394 is a wasteful number, since it uses less digits than its factorization.

819874394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124980.

The product of its digits is 1741824, while the sum is 53.

The square root of 819874394 is about 28633.4488666664. The cubic root of 819874394 is about 935.9423688248.

The spelling of 819874394 in words is "eight hundred nineteen million, eight hundred seventy-four thousand, three hundred ninety-four".