820845954 has 16 divisors (see below), whose sum is σ = 1824102240. Its totient is φ = 273615300.

The previous prime is 820845889. The next prime is 820845959. The reversal of 820845954 is 459548028.

It is not an unprimeable number, because it can be changed into a prime (820845959) 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, 7600372 + ... + 7600479.

It is an arithmetic number, because the mean of its divisors is an integer number (114006390).

Almost surely, 2^820845954 is an apocalyptic number.

820845954 is an abundant number, since it is smaller than the sum of its proper divisors (1003256286).

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

820845954 is a wasteful number, since it uses less digits than its factorization.

820845954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15200862 (or 15200856 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 820845954 is about 28650.4093164478. The cubic root of 820845954 is about 936.3119234885.

The spelling of 820845954 in words is "eight hundred twenty million, eight hundred forty-five thousand, nine hundred fifty-four".