1144446780 has 24 divisors (see below), whose sum is σ = 3204451152. Its totient is φ = 305185792.

The previous prime is 1144446739. The next prime is 1144446833. The reversal of 1144446780 is 876444411.

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 7 ways as a sum of consecutive naturals, for example, 9536997 + ... + 9537116.

It is an arithmetic number, because the mean of its divisors is an integer number (133518798).

Almost surely, 2^1144446780 is an apocalyptic number.

1144446780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144446780 is an abundant number, since it is smaller than the sum of its proper divisors (2060004372).

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

1144446780 is a wasteful number, since it uses less digits than its factorization.

1144446780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19074125 (or 19074123 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 1144446780 is about 33829.6730696588. The cubic root of 1144446780 is about 1046.0004399288. Note that the first 3 decimals are identical.

The spelling of 1144446780 in words is "one billion, one hundred forty-four million, four hundred forty-six thousand, seven hundred eighty".