1144657866 has 32 divisors (see below), whose sum is σ = 2498646528. Its totient is φ = 346697840.

The previous prime is 1144657847. The next prime is 1144657901. The reversal of 1144657866 is 6687564411.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236725 + ... + 241511.

It is an arithmetic number, because the mean of its divisors is an integer number (78082704).

Almost surely, 2^1144657866 is an apocalyptic number.

1144657866 is an abundant number, since it is smaller than the sum of its proper divisors (1353988662).

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

1144657866 is a wasteful number, since it uses less digits than its factorization.

1144657866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426.

The product of its digits is 967680, while the sum is 48.

The square root of 1144657866 is about 33832.7927608703. The cubic root of 1144657866 is about 1046.0647453729.

The spelling of 1144657866 in words is "one billion, one hundred forty-four million, six hundred fifty-seven thousand, eight hundred sixty-six".