1143648499 has 8 divisors (see below), whose sum is σ = 1310796288. Its totient is φ = 977443080.

The previous prime is 1143648491. The next prime is 1143648521. The reversal of 1143648499 is 9948463411.

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 1143648499 - 2³ = 1143648491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143648491) 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, 232987 + ... + 237844.

It is an arithmetic number, because the mean of its divisors is an integer number (163849536).

Almost surely, 2^1143648499 is an apocalyptic number.

1143648499 is a deficient number, since it is larger than the sum of its proper divisors (167147789).

1143648499 is an equidigital number, since it uses as much as digits as its factorization.

1143648499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471185.

The product of its digits is 746496, while the sum is 49.

The square root of 1143648499 is about 33817.8724789127. The cubic root of 1143648499 is about 1045.7571793094.

The spelling of 1143648499 in words is "one billion, one hundred forty-three million, six hundred forty-eight thousand, four hundred ninety-nine".