820289841474 has 16 divisors (see below), whose sum is σ = 1652382416160. Its totient is φ = 271462824960.

The previous prime is 820289841473. The next prime is 820289841493. The reversal of 820289841474 is 474148982028.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (820289841473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491779647 + ... + 491781314.

It is an arithmetic number, because the mean of its divisors is an integer number (103273901010).

Almost surely, 2^820289841474 is an apocalyptic number.

820289841474 is an abundant number, since it is smaller than the sum of its proper divisors (832092574686).

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

820289841474 is a wasteful number, since it uses less digits than its factorization.

820289841474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983561105.

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 820289841474 in words is "eight hundred twenty billion, two hundred eighty-nine million, eight hundred forty-one thousand, four hundred seventy-four".