2164477812 has 48 divisors (see below), whose sum is σ = 5880857472. Its totient is φ = 606752640.

The previous prime is 2164477811. The next prime is 2164477873. The reversal of 2164477812 is 2187744612.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164477811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238639 + ... + 247542.

It is an arithmetic number, because the mean of its divisors is an integer number (122517864).

Almost surely, 2^2164477812 is an apocalyptic number.

It is an amenable number.

2164477812 is an abundant number, since it is smaller than the sum of its proper divisors (3716379660).

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

2164477812 is a wasteful number, since it uses less digits than its factorization.

2164477812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486248 (or 486246 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 2164477812 is about 46523.9488005909. The cubic root of 2164477812 is about 1293.5534524261.

The spelling of 2164477812 in words is "two billion, one hundred sixty-four million, four hundred seventy-seven thousand, eight hundred twelve".