1143409450 has 24 divisors (see below), whose sum is σ = 2128967532. Its totient is φ = 456885120.

The previous prime is 1143409441. The next prime is 1143409453. The reversal of 1143409450 is 549043411.

It can be written as a sum of positive squares in 6 ways, for example, as 488100649 + 655308801 = 22093^2 + 25599^2 .

It is not an unprimeable number, because it can be changed into a prime (1143409453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38382 + ... + 61318.

Almost surely, 2^1143409450 is an apocalyptic number.

1143409450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143409450 is a deficient number, since it is larger than the sum of its proper divisors (985558082).

1143409450 is a wasteful number, since it uses less digits than its factorization.

1143409450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23946 (or 23941 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1143409450 is about 33814.3379352605. The cubic root of 1143409450 is about 1045.6843117492.

The spelling of 1143409450 in words is "one billion, one hundred forty-three million, four hundred nine thousand, four hundred fifty".