1153909272 has 32 divisors (see below), whose sum is σ = 3054466800. Its totient is φ = 362010624.

The previous prime is 1153909271. The next prime is 1153909279. The reversal of 1153909272 is 2729093511.

It is a self number, because there is not a number n which added to its sum of digits gives 1153909272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153909271) 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, 1413697 + ... + 1414512.

Almost surely, 2^1153909272 is an apocalyptic number.

1153909272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1153909272 is an abundant number, since it is smaller than the sum of its proper divisors (1900557528).

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

1153909272 is a wasteful number, since it uses less digits than its factorization.

1153909272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828235 (or 2828231 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1153909272 is about 33969.2400857011. The cubic root of 1153909272 is about 1048.8753709243.

The spelling of 1153909272 in words is "one billion, one hundred fifty-three million, nine hundred nine thousand, two hundred seventy-two".