1153943460 has 36 divisors (see below), whose sum is σ = 3500295708. Its totient is φ = 307718208.

The previous prime is 1153943449. The next prime is 1153943467. The reversal of 1153943460 is 643493511.

1153943460 is a `hidden beast` number, since 1 + 153 + 9 + 43 + 460 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 804403044 + 349540416 = 28362^2 + 18696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1153943467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3205219 + ... + 3205578.

Almost surely, 2^1153943460 is an apocalyptic number.

1153943460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153943460 is an abundant number, since it is smaller than the sum of its proper divisors (2346352248).

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

1153943460 is a wasteful number, since it uses less digits than its factorization.

1153943460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410812 (or 6410807 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1153943460 is about 33969.7433019445. The cubic root of 1153943460 is about 1048.8857295079.

The spelling of 1153943460 in words is "one billion, one hundred fifty-three million, nine hundred forty-three thousand, four hundred sixty".