1153545215 has 12 divisors (see below), whose sum is σ = 1388725464. Its totient is φ = 919862736.

The previous prime is 1153545187. The next prime is 1153545221. The reversal of 1153545215 is 5125453511.

1153545215 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1153545215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1793684 + ... + 1794326.

It is an arithmetic number, because the mean of its divisors is an integer number (115727122).

Almost surely, 2^1153545215 is an apocalyptic number.

1153545215 is a deficient number, since it is larger than the sum of its proper divisors (235180249).

1153545215 is an frugal number, since it uses more digits than its factorization.

1153545215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1247 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The square root of 1153545215 is about 33963.8810355943. The cubic root of 1153545215 is about 1048.7650530120.

Adding to 1153545215 its reverse (5125453511), we get a palindrome (6278998726).

The spelling of 1153545215 in words is "one billion, one hundred fifty-three million, five hundred forty-five thousand, two hundred fifteen".