1142993866 has 16 divisors (see below), whose sum is σ = 1996389504. Its totient is φ = 480611664.

The previous prime is 1142993857. The next prime is 1142993867. The reversal of 1142993866 is 6683992411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1142993867) 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, 769470 + ... + 770953.

It is an arithmetic number, because the mean of its divisors is an integer number (124774344).

Almost surely, 2^1142993866 is an apocalyptic number.

1142993866 is a deficient number, since it is larger than the sum of its proper divisors (853395638).

1142993866 is a wasteful number, since it uses less digits than its factorization.

1142993866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540485.

The product of its digits is 559872, while the sum is 49.

The square root of 1142993866 is about 33808.1922912184. The cubic root of 1142993866 is about 1045.5576081350.

The spelling of 1142993866 in words is "one billion, one hundred forty-two million, nine hundred ninety-three thousand, eight hundred sixty-six".