1153503399 has 4 divisors (see below), whose sum is σ = 1538004536. Its totient is φ = 769002264.

The previous prime is 1153503353. The next prime is 1153503401. The reversal of 1153503399 is 9933053511.

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

It is not a de Polignac number, because 1153503399 - 2⁷ = 1153503271 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 (1153504399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192250564 + ... + 192250569.

It is an arithmetic number, because the mean of its divisors is an integer number (384501134).

Almost surely, 2^1153503399 is an apocalyptic number.

1153503399 is a deficient number, since it is larger than the sum of its proper divisors (384501137).

1153503399 is an equidigital number, since it uses as much as digits as its factorization.

1153503399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384501136.

The product of its (nonzero) digits is 54675, while the sum is 39.

The square root of 1153503399 is about 33963.2654348783. The cubic root of 1153503399 is about 1048.7523802854.

The spelling of 1153503399 in words is "one billion, one hundred fifty-three million, five hundred three thousand, three hundred ninety-nine".