2001018920 has 32 divisors (see below), whose sum is σ = 4510948320. Its totient is φ = 798868800.

The previous prime is 2001018919. The next prime is 2001018947. The reversal of 2001018920 is 298101002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26906 + ... + 68745.

It is an arithmetic number, because the mean of its divisors is an integer number (140967135).

Almost surely, 2^2001018920 is an apocalyptic number.

2001018920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001018920 is an abundant number, since it is smaller than the sum of its proper divisors (2509929400).

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

2001018920 is a wasteful number, since it uses less digits than its factorization.

2001018920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96185 (or 96181 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2001018920 is about 44732.7499713577. The cubic root of 2001018920 is about 1260.1349733632.

Adding to 2001018920 its reverse (298101002), we get a palindrome (2299119922).

The spelling of 2001018920 in words is "two billion, one million, eighteen thousand, nine hundred twenty".