2012638992 has 160 divisors (see below), whose sum is σ = 6736235520. Its totient is φ = 502848000.

The previous prime is 2012638987. The next prime is 2012639003. The reversal of 2012638992 is 2998362102.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70867 + ... + 95117.

It is an arithmetic number, because the mean of its divisors is an integer number (42101472).

Almost surely, 2^2012638992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012638992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3368117760).

2012638992 is an abundant number, since it is smaller than the sum of its proper divisors (4723596528).

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

2012638992 is a wasteful number, since it uses less digits than its factorization.

2012638992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24301 (or 24295 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2012638992 is about 44862.4452298356. The cubic root of 2012638992 is about 1262.5695007584.

The spelling of 2012638992 in words is "two billion, twelve million, six hundred thirty-eight thousand, nine hundred ninety-two".