1143697464 has 192 divisors, whose sum is σ = 3838161600. Its totient is φ = 299593728.

The previous prime is 1143697463. The next prime is 1143697469. The reversal of 1143697464 is 4647963411.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143697463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1132992 + ... + 1134000.

It is an arithmetic number, because the mean of its divisors is an integer number (19990425).

Almost surely, 2^1143697464 is an apocalyptic number.

1143697464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143697464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919080800).

1143697464 is an abundant number, since it is smaller than the sum of its proper divisors (2694464136).

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

1143697464 is a wasteful number, since it uses less digits than its factorization.

1143697464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1207 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 1143697464 is about 33818.5964226785. The cubic root of 1143697464 is about 1045.7721036997.

It can be divided in two parts, 11436 and 97464, that added together give a square (108900 = 330²).

The spelling of 1143697464 in words is "one billion, one hundred forty-three million, six hundred ninety-seven thousand, four hundred sixty-four".