2001015140 has 12 divisors (see below), whose sum is σ = 4202131836. Its totient is φ = 800406048.

The previous prime is 2001015139. The next prime is 2001015169. The reversal of 2001015140 is 415101002.

It can be written as a sum of positive squares in 2 ways, for example, as 1557407296 + 443607844 = 39464^2 + 21062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50025359 + ... + 50025398.

It is an arithmetic number, because the mean of its divisors is an integer number (350177653).

Almost surely, 2^2001015140 is an apocalyptic number.

2001015140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001015140 is an abundant number, since it is smaller than the sum of its proper divisors (2201116696).

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

2001015140 is a wasteful number, since it uses less digits than its factorization.

2001015140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100050766 (or 100050764 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 2001015140 is about 44732.7077204142. The cubic root of 2001015140 is about 1260.1341798819.

Adding to 2001015140 its reverse (415101002), we get a palindrome (2416116142).

The spelling of 2001015140 in words is "two billion, one million, fifteen thousand, one hundred forty".