2129453520 has 40 divisors (see below), whose sum is σ = 6601306656. Its totient is φ = 567854208.

The previous prime is 2129453509. The next prime is 2129453527. The reversal of 2129453520 is 253549212.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129453527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4436122 + ... + 4436601.

Almost surely, 2^2129453520 is an apocalyptic number.

2129453520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2129453520 is an abundant number, since it is smaller than the sum of its proper divisors (4471853136).

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

2129453520 is a wasteful number, since it uses less digits than its factorization.

2129453520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8872739 (or 8872733 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2129453520 is about 46146.0022103757. The cubic root of 2129453520 is about 1286.5383061953.

The spelling of 2129453520 in words is "two billion, one hundred twenty-nine million, four hundred fifty-three thousand, five hundred twenty".