1153505388 has 24 divisors (see below), whose sum is σ = 3076014592. Its totient is φ = 329572944.

The previous prime is 1153505387. The next prime is 1153505393. The reversal of 1153505388 is 8835053511.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1153505387) 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 7 ways as a sum of consecutive naturals, for example, 6866020 + ... + 6866187.

Almost surely, 2^1153505388 is an apocalyptic number.

It is an amenable number.

1153505388 is an abundant number, since it is smaller than the sum of its proper divisors (1922509204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153505388 is a wasteful number, since it uses less digits than its factorization.

1153505388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13732221 (or 13732219 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 1153505388 is about 33963.2947165024. The cubic root of 1153505388 is about 1048.7529830772.

Adding to 1153505388 its reverse (8835053511), we get a palindrome (9988558899).

The spelling of 1153505388 in words is "one billion, one hundred fifty-three million, five hundred five thousand, three hundred eighty-eight".