1143545085 has 24 divisors (see below), whose sum is σ = 1983490080. Its totient is φ = 609476832.

The previous prime is 1143545057. The next prime is 1143545087. The reversal of 1143545085 is 5805453411.

1143545085 is a `hidden beast` number, since 1 + 143 + 5 + 4 + 508 + 5 = 666.

It is not a de Polignac number, because 1143545085 - 2¹⁶ = 1143479549 is a prime.

It is a super-2 number, since 2×1143545085² = 2615390722855314450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143545087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65406 + ... + 81024.

It is an arithmetic number, because the mean of its divisors is an integer number (82645420).

Almost surely, 2^1143545085 is an apocalyptic number.

1143545085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143545085 is a deficient number, since it is larger than the sum of its proper divisors (839944995).

1143545085 is a wasteful number, since it uses less digits than its factorization.

1143545085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17257 (or 17254 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1143545085 is about 33816.3434599307. The cubic root of 1143545085 is about 1045.7256576216.

Adding to 1143545085 its reverse (5805453411), we get a palindrome (6948998496).

The spelling of 1143545085 in words is "one billion, one hundred forty-three million, five hundred forty-five thousand, eighty-five".