1143445770 has 96 divisors (see below), whose sum is σ = 3040727040. Its totient is φ = 298045440.

The previous prime is 1143445769. The next prime is 1143445781. The reversal of 1143445770 is 775443411.

1143445770 is a `hidden beast` number, since 1 + 1 + 43 + 44 + 577 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 810826 + ... + 812234.

It is an arithmetic number, because the mean of its divisors is an integer number (31674240).

Almost surely, 2^1143445770 is an apocalyptic number.

1143445770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143445770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520363520).

1143445770 is an abundant number, since it is smaller than the sum of its proper divisors (1897281270).

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

1143445770 is a wasteful number, since it uses less digits than its factorization.

1143445770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 1143445770 is about 33814.8749812860. The cubic root of 1143445770 is about 1045.6953835637.

The spelling of 1143445770 in words is "one billion, one hundred forty-three million, four hundred forty-five thousand, seven hundred seventy".