1144684278 has 16 divisors (see below), whose sum is σ = 2543742960. Its totient is φ = 381561408.

The previous prime is 1144684267. The next prime is 1144684297. The reversal of 1144684278 is 8724864411.

1144684278 is a `hidden beast` number, since 114 + 468 + 4 + 2 + 78 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10598875 + ... + 10598982.

It is an arithmetic number, because the mean of its divisors is an integer number (158983935).

Almost surely, 2^1144684278 is an apocalyptic number.

1144684278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1144684278 is an abundant number, since it is smaller than the sum of its proper divisors (1399058682).

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

1144684278 is a wasteful number, since it uses less digits than its factorization.

1144684278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21197868 (or 21197862 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 1144684278 is about 33833.1830899784. The cubic root of 1144684278 is about 1046.0727909938.

The spelling of 1144684278 in words is "one billion, one hundred forty-four million, six hundred eighty-four thousand, two hundred seventy-eight".