2153345220 has 72 divisors (see below), whose sum is σ = 7034268696. Its totient is φ = 530053632.

The previous prime is 2153345191. The next prime is 2153345231. The reversal of 2153345220 is 225433512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 145588356 + 2007756864 = 12066^2 + 44808^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457777 + ... + 462456.

Almost surely, 2^2153345220 is an apocalyptic number.

2153345220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153345220 is an abundant number, since it is smaller than the sum of its proper divisors (4880923476).

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

2153345220 is a wasteful number, since it uses less digits than its factorization.

2153345220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920261 (or 920256 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2153345220 is about 46404.1508919191. The cubic root of 2153345220 is about 1291.3319215990.

Adding to 2153345220 its reverse (225433512), we get a palindrome (2378778732).

The spelling of 2153345220 in words is "two billion, one hundred fifty-three million, three hundred forty-five thousand, two hundred twenty".