1143166464 has 240 divisors, whose sum is σ = 3791810880. Its totient is φ = 327905280.

The previous prime is 1143166459. The next prime is 1143166511. The reversal of 1143166464 is 4646613411.

1143166464 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 1 + 6 + 646 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 962479 + ... + 963665.

It is an arithmetic number, because the mean of its divisors is an integer number (15799212).

Almost surely, 2^1143166464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143166464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895905440).

1143166464 is an abundant number, since it is smaller than the sum of its proper divisors (2648644416).

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

1143166464 is a wasteful number, since it uses less digits than its factorization.

1143166464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1222 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1143166464 is about 33810.7448010244. The cubic root of 1143166464 is about 1045.6102336928.

Adding to 1143166464 its reverse (4646613411), we get a palindrome (5789779875).

The spelling of 1143166464 in words is "one billion, one hundred forty-three million, one hundred sixty-six thousand, four hundred sixty-four".