1143542851 has 8 divisors (see below), whose sum is σ = 1248478704. Its totient is φ = 1038769920.

The previous prime is 1143542843. The next prime is 1143542861. The reversal of 1143542851 is 1582453411.

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

It is a cyclic number.

It is not a de Polignac number, because 1143542851 - 2³ = 1143542843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143542821) 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, 25810 + ... + 54343.

It is an arithmetic number, because the mean of its divisors is an integer number (156059838).

Almost surely, 2^1143542851 is an apocalyptic number.

1143542851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1143542851 is a deficient number, since it is larger than the sum of its proper divisors (104935853).

1143542851 is a wasteful number, since it uses less digits than its factorization.

1143542851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81461.

The product of its digits is 19200, while the sum is 34.

The square root of 1143542851 is about 33816.3104285491. The cubic root of 1143542851 is about 1045.7249766537.

The spelling of 1143542851 in words is "one billion, one hundred forty-three million, five hundred forty-two thousand, eight hundred fifty-one".