2153874820 has 12 divisors (see below), whose sum is σ = 4523137164. Its totient is φ = 861549920.

The previous prime is 2153874809. The next prime is 2153874851. The reversal of 2153874820 is 284783512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1014677316 + 1139197504 = 31854^2 + 33752^2 .

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, 53846851 + ... + 53846890.

It is an arithmetic number, because the mean of its divisors is an integer number (376928097).

Almost surely, 2^2153874820 is an apocalyptic number.

2153874820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153874820 is an abundant number, since it is smaller than the sum of its proper divisors (2369262344).

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

2153874820 is a wasteful number, since it uses less digits than its factorization.

2153874820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107693750 (or 107693748 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 2153874820 is about 46409.8569271658. The cubic root of 2153874820 is about 1291.4377775669.

The spelling of 2153874820 in words is "two billion, one hundred fifty-three million, eight hundred seventy-four thousand, eight hundred twenty".