1143369394 has 8 divisors (see below), whose sum is σ = 1727573148. Its totient is φ = 567511680.

The previous prime is 1143369313. The next prime is 1143369397. The reversal of 1143369394 is 4939633411.

It can be written as a sum of positive squares in 2 ways, for example, as 1064390625 + 78978769 = 32625^2 + 8887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1143369394² = 2614587142271854472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1143369394.

It is not an unprimeable number, because it can be changed into a prime (1143369397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086167 + ... + 2086714.

Almost surely, 2^1143369394 is an apocalyptic number.

1143369394 is a deficient number, since it is larger than the sum of its proper divisors (584203754).

1143369394 is a wasteful number, since it uses less digits than its factorization.

1143369394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173020.

The product of its digits is 209952, while the sum is 43.

The square root of 1143369394 is about 33813.7456369447. The cubic root of 1143369394 is about 1045.6721007779.

The spelling of 1143369394 in words is "one billion, one hundred forty-three million, three hundred sixty-nine thousand, three hundred ninety-four".