1143554159 has 8 divisors (see below), whose sum is σ = 1313172480. Its totient is φ = 984879000.

The previous prime is 1143554149. The next prime is 1143554171. The reversal of 1143554159 is 9514553411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143554159 is a prime.

It is a super-2 number, since 2×1143554159² = 2615432229132394562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143554119) 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, 2735567 + ... + 2735984.

It is an arithmetic number, because the mean of its divisors is an integer number (164146560).

Almost surely, 2^1143554159 is an apocalyptic number.

1143554159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1143554159 is a deficient number, since it is larger than the sum of its proper divisors (169618321).

1143554159 is a wasteful number, since it uses less digits than its factorization.

1143554159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471581.

The product of its digits is 54000, while the sum is 38.

The square root of 1143554159 is about 33816.4776255600. The cubic root of 1143554159 is about 1045.7284235495.

The spelling of 1143554159 in words is "one billion, one hundred forty-three million, five hundred fifty-four thousand, one hundred fifty-nine".