1143477712 has 40 divisors (see below), whose sum is σ = 2395096704. Its totient is φ = 525727104.

The previous prime is 1143477707. The next prime is 1143477719. The reversal of 1143477712 is 2177743411.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143477719) 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, 44253 + ... + 65155.

Almost surely, 2^1143477712 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 1143477712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197548352).

1143477712 is an abundant number, since it is smaller than the sum of its proper divisors (1251618992).

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

1143477712 is a wasteful number, since it uses less digits than its factorization.

1143477712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21187 (or 21181 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 1143477712 is about 33815.3472849237. The cubic root of 1143477712 is about 1045.7051205918.

The spelling of 1143477712 in words is "one billion, one hundred forty-three million, four hundred seventy-seven thousand, seven hundred twelve".