2001129837 has 32 divisors (see below), whose sum is σ = 3213649920. Its totient is φ = 1082030400.

The previous prime is 2001129797. The next prime is 2001129839. The reversal of 2001129837 is 7389211002.

It is not a de Polignac number, because 2001129837 - 2⁶ = 2001129773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001129798 and 2001129807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001129839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401712 + ... + 406662.

It is an arithmetic number, because the mean of its divisors is an integer number (100426560).

Almost surely, 2^2001129837 is an apocalyptic number.

It is an amenable number.

2001129837 is a deficient number, since it is larger than the sum of its proper divisors (1212520083).

2001129837 is a wasteful number, since it uses less digits than its factorization.

2001129837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 2001129837 is about 44733.9897281698. The cubic root of 2001129837 is about 1260.1582561363.

The spelling of 2001129837 in words is "two billion, one million, one hundred twenty-nine thousand, eight hundred thirty-seven".