816901842 has 8 divisors (see below), whose sum is σ = 1633803696. Its totient is φ = 272300612.

The previous prime is 816901829. The next prime is 816901859. The reversal of 816901842 is 248109618.

816901842 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.

816901842 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 816901842.

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, 68075148 + ... + 68075159.

It is an arithmetic number, because the mean of its divisors is an integer number (204225462).

Almost surely, 2^816901842 is an apocalyptic number.

816901842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

816901842 is a wasteful number, since it uses less digits than its factorization.

816901842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136150312.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 816901842 is about 28581.4947474760. The cubic root of 816901842 is about 934.8098756475.

The spelling of 816901842 in words is "eight hundred sixteen million, nine hundred one thousand, eight hundred forty-two".