1153643499 has 16 divisors (see below), whose sum is σ = 1783411200. Its totient is φ = 735656328.

The previous prime is 1153643479. The next prime is 1153643503. The reversal of 1153643499 is 9943463511.

1153643499 is a `hidden beast` number, since 1 + 153 + 6 + 4 + 3 + 499 = 666.

It is not a de Polignac number, because 1153643499 - 2¹¹ = 1153641451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1153643419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 928239 + ... + 929480.

It is an arithmetic number, because the mean of its divisors is an integer number (111463200).

Almost surely, 2^1153643499 is an apocalyptic number.

1153643499 is a deficient number, since it is larger than the sum of its proper divisors (629767701).

1153643499 is a wasteful number, since it uses less digits than its factorization.

1153643499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857751 (or 1857745 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 1153643499 is about 33965.3278947812. The cubic root of 1153643499 is about 1048.7948376839.

The spelling of 1153643499 in words is "one billion, one hundred fifty-three million, six hundred forty-three thousand, four hundred ninety-nine".