1153728803 has 4 divisors (see below), whose sum is σ = 1153956000. Its totient is φ = 1153501608.

The previous prime is 1153728781. The next prime is 1153728827. The reversal of 1153728803 is 3088273511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1153728803 - 2⁶ = 1153728739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153728503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105803 + ... + 116196.

It is an arithmetic number, because the mean of its divisors is an integer number (288489000).

Almost surely, 2^1153728803 is an apocalyptic number.

1153728803 is a deficient number, since it is larger than the sum of its proper divisors (227197).

1153728803 is an equidigital number, since it uses as much as digits as its factorization.

1153728803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227196.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1153728803 is about 33966.5836227313. The cubic root of 1153728803 is about 1048.8206874343.

The spelling of 1153728803 in words is "one billion, one hundred fifty-three million, seven hundred twenty-eight thousand, eight hundred three".