1440041645 has 24 divisors (see below), whose sum is σ = 2014380000. Its totient is φ = 985394592.

The previous prime is 1440041633. The next prime is 1440041671. The reversal of 1440041645 is 5461400441.

It is not a de Polignac number, because 1440041645 - 2¹⁴ = 1440025261 is a prime.

It is a super-3 number, since 3×1440041645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116366 + ... + 128144.

It is an arithmetic number, because the mean of its divisors is an integer number (83932500).

Almost surely, 2^1440041645 is an apocalyptic number.

It is an amenable number.

1440041645 is a deficient number, since it is larger than the sum of its proper divisors (574338355).

1440041645 is a wasteful number, since it uses less digits than its factorization.

1440041645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12297 (or 12290 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1440041645 is about 37947.8806391082. The cubic root of 1440041645 is about 1129.2541205094.

The spelling of 1440041645 in words is "one billion, four hundred forty million, forty-one thousand, six hundred forty-five".