1143272663 has 8 divisors (see below), whose sum is σ = 1238504400. Its totient is φ = 1055326584.

The previous prime is 1143272651. The next prime is 1143272671. The reversal of 1143272663 is 3662723411.

It is not a de Polignac number, because 1143272663 - 2⁸ = 1143272407 is a prime.

It is a super-2 number, since 2×1143272663² = 2614144763926223138, 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 (1143272623) 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, 257993 + ... + 262386.

It is an arithmetic number, because the mean of its divisors is an integer number (154813050).

Almost surely, 2^1143272663 is an apocalyptic number.

1143272663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1143272663 is a deficient number, since it is larger than the sum of its proper divisors (95231737).

1143272663 is an frugal number, since it uses more digits than its factorization.

1143272663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520418 (or 520392 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 1143272663 is about 33812.3152564269. The cubic root of 1143272663 is about 1045.6426113988.

The spelling of 1143272663 in words is "one billion, one hundred forty-three million, two hundred seventy-two thousand, six hundred sixty-three".