1440418845 has 16 divisors (see below), whose sum is σ = 2336242752. Its totient is φ = 757699200.

The previous prime is 1440418841. The next prime is 1440418877. The reversal of 1440418845 is 5488140441.

It is a happy number.

It is not a de Polignac number, because 1440418845 - 2² = 1440418841 is a prime.

It is a super-2 number, since 2×1440418845² = 4149612898062268050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440418841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656631 + ... + 658820.

It is an arithmetic number, because the mean of its divisors is an integer number (146015172).

Almost surely, 2^1440418845 is an apocalyptic number.

1440418845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1440418845 is a deficient number, since it is larger than the sum of its proper divisors (895823907).

1440418845 is a wasteful number, since it uses less digits than its factorization.

1440418845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315532.

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 1440418845 is about 37952.8502882195. The cubic root of 1440418845 is about 1129.3527096648.

The spelling of 1440418845 in words is "one billion, four hundred forty million, four hundred eighteen thousand, eight hundred forty-five".