1144664109 has 8 divisors (see below), whose sum is σ = 1695798720. Its totient is φ = 763109388.

The previous prime is 1144664093. The next prime is 1144664149. The reversal of 1144664109 is 9014664411.

1144664109 is a `hidden beast` number, since 1 + 1 + 4 + 4 + 6 + 641 + 0 + 9 = 666.

It is not a de Polignac number, because 1144664109 - 2⁴ = 1144664093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144664149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21197457 + ... + 21197510.

It is an arithmetic number, because the mean of its divisors is an integer number (211974840).

Almost surely, 2^1144664109 is an apocalyptic number.

It is an amenable number.

1144664109 is a deficient number, since it is larger than the sum of its proper divisors (551134611).

1144664109 is an equidigital number, since it uses as much as digits as its factorization.

1144664109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42394976 (or 42394970 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1144664109 is about 33832.8850233024. The cubic root of 1144664109 is about 1046.0666471261.

The spelling of 1144664109 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, one hundred nine".