1153044999 has 12 divisors (see below), whose sum is σ = 1672785400. Its totient is φ = 765338544.

The previous prime is 1153044983. The next prime is 1153045007. The reversal of 1153044999 is 9994403511.

1153044999 is a `hidden beast` number, since 1 + 153 + 0 + 4 + 499 + 9 = 666.

It is not a de Polignac number, because 1153044999 - 2⁴ = 1153044983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153044799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277669 + ... + 281790.

Almost surely, 2^1153044999 is an apocalyptic number.

1153044999 is a deficient number, since it is larger than the sum of its proper divisors (519740401).

1153044999 is a wasteful number, since it uses less digits than its factorization.

1153044999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559694 (or 559691 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 1153044999 is about 33956.5162965814. The cubic root of 1153044999 is about 1048.6134378287.

The spelling of 1153044999 in words is "one billion, one hundred fifty-three million, forty-four thousand, nine hundred ninety-nine".