2124851820 has 96 divisors (see below), whose sum is σ = 7322585088. Its totient is φ = 448319232.

The previous prime is 2124851809. The next prime is 2124851867. The reversal of 2124851820 is 281584212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189124 + ... + 200043.

It is an arithmetic number, because the mean of its divisors is an integer number (76276928).

Almost surely, 2^2124851820 is an apocalyptic number.

2124851820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124851820 is an abundant number, since it is smaller than the sum of its proper divisors (5197733268).

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

2124851820 is a wasteful number, since it uses less digits than its factorization.

2124851820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389199 (or 389197 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 2124851820 is about 46096.1150206826. The cubic root of 2124851820 is about 1285.6109113007.

The spelling of 2124851820 in words is "two billion, one hundred twenty-four million, eight hundred fifty-one thousand, eight hundred twenty".