2112457829 has 4 divisors (see below), whose sum is σ = 2223639840. Its totient is φ = 2001275820.

The previous prime is 2112457813. The next prime is 2112457873. The reversal of 2112457829 is 9287542112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2112457829 - 2⁴ = 2112457813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112457129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55590977 + ... + 55591014.

It is an arithmetic number, because the mean of its divisors is an integer number (555909960).

Almost surely, 2^2112457829 is an apocalyptic number.

It is an amenable number.

2112457829 is a deficient number, since it is larger than the sum of its proper divisors (111182011).

2112457829 is a wasteful number, since it uses less digits than its factorization.

2112457829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111182010.

The product of its digits is 80640, while the sum is 41.

The square root of 2112457829 is about 45961.4820148350. The cubic root of 2112457829 is about 1283.1064337746.

The spelling of 2112457829 in words is "two billion, one hundred twelve million, four hundred fifty-seven thousand, eight hundred twenty-nine".