1440001011 has 8 divisors (see below), whose sum is σ = 1921853440. Its totient is φ = 959074632.

The previous prime is 1440000959. The next prime is 1440001049. The reversal of 1440001011 is 1101000441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440001011 - 2⁷ = 1440000883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440001091) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 227875 + ... + 234108.

It is an arithmetic number, because the mean of its divisors is an integer number (240231680).

Almost surely, 2^1440001011 is an apocalyptic number.

1440001011 is a deficient number, since it is larger than the sum of its proper divisors (481852429).

1440001011 is a wasteful number, since it uses less digits than its factorization.

1440001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463025.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1440001011 is about 37947.3452431129. The cubic root of 1440001011 is about 1129.2434989315.

Adding to 1440001011 its reverse (1101000441), we get a palindrome (2541001452).

The spelling of 1440001011 in words is "one billion, four hundred forty million, one thousand, eleven".