2131820952 has 16 divisors (see below), whose sum is σ = 5329552440. Its totient is φ = 710606976.

The previous prime is 2131820921. The next prime is 2131820959. The reversal of 2131820952 is 2590281312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131820959) 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 3 ways as a sum of consecutive naturals, for example, 44412913 + ... + 44412960.

Almost surely, 2^2131820952 is an apocalyptic number.

It is an amenable number.

2131820952 is an abundant number, since it is smaller than the sum of its proper divisors (3197731488).

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

2131820952 is a wasteful number, since it uses less digits than its factorization.

2131820952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88825882 (or 88825878 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 2131820952 is about 46171.6466243083. The cubic root of 2131820952 is about 1287.0149017002.

The spelling of 2131820952 in words is "two billion, one hundred thirty-one million, eight hundred twenty thousand, nine hundred fifty-two".