2152155830 has 64 divisors (see below), whose sum is σ = 4399660800. Its totient is φ = 750798720.

The previous prime is 2152155827. The next prime is 2152155833. The reversal of 2152155830 is 385512512.

It is an interprime number because it is at equal distance from previous prime (2152155827) and next prime (2152155833).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152155833) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 517901 + ... + 522039.

It is an arithmetic number, because the mean of its divisors is an integer number (68744700).

Almost surely, 2^2152155830 is an apocalyptic number.

2152155830 is an abundant number, since it is smaller than the sum of its proper divisors (2247504970).

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

2152155830 is a wasteful number, since it uses less digits than its factorization.

2152155830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 2152155830 is about 46391.3335656564. Note that the first 3 decimals coincide. The cubic root of 2152155830 is about 1291.0941241279.

The spelling of 2152155830 in words is "two billion, one hundred fifty-two million, one hundred fifty-five thousand, eight hundred thirty".