2153453340 has 48 divisors (see below), whose sum is σ = 6058281600. Its totient is φ = 571529280.

The previous prime is 2153453339. The next prime is 2153453363. The reversal of 2153453340 is 433543512.

It is a super-2 number, since 2×2153453340² = 9274722575114311200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2153453298 and 2153453307.

It is a congruent number.

It is an unprimeable number.

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, 72390 + ... + 97709.

It is an arithmetic number, because the mean of its divisors is an integer number (126214200).

Almost surely, 2^2153453340 is an apocalyptic number.

2153453340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153453340 is an abundant number, since it is smaller than the sum of its proper divisors (3904828260).

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

2153453340 is a wasteful number, since it uses less digits than its factorization.

2153453340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170322 (or 170320 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 2153453340 is about 46405.3158592849. The cubic root of 2153453340 is about 1291.3535339364.

Adding to 2153453340 its reverse (433543512), we get a palindrome (2586996852).

The spelling of 2153453340 in words is "two billion, one hundred fifty-three million, four hundred fifty-three thousand, three hundred forty".