1144465866 has 24 divisors (see below), whose sum is σ = 2480371140. Its totient is φ = 381381696.

The previous prime is 1144465853. The next prime is 1144465873. The reversal of 1144465866 is 6685644411.

It can be written as a sum of positive squares in 2 ways, for example, as 1144130625 + 335241 = 33825^2 + 579^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82350 + ... + 95238.

Almost surely, 2^1144465866 is an apocalyptic number.

1144465866 is an abundant number, since it is smaller than the sum of its proper divisors (1335905274).

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

1144465866 is a wasteful number, since it uses less digits than its factorization.

1144465866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17830 (or 17827 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 1144465866 is about 33829.9551581139. The cubic root of 1144465866 is about 1046.0062546315.

The spelling of 1144465866 in words is "one billion, one hundred forty-four million, four hundred sixty-five thousand, eight hundred sixty-six".