1153543012 has 24 divisors (see below), whose sum is σ = 2128202496. Its totient is φ = 546002688.

The previous prime is 1153542979. The next prime is 1153543019. The reversal of 1153543012 is 2103453511.

It is a happy number.

It is a super-2 number, since 2×1153543012² = 2661322961068064288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1153543019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55708 + ... + 73555.

It is an arithmetic number, because the mean of its divisors is an integer number (88675104).

Almost surely, 2^1153543012 is an apocalyptic number.

It is an amenable number.

1153543012 is a deficient number, since it is larger than the sum of its proper divisors (974659484).

1153543012 is a wasteful number, since it uses less digits than its factorization.

1153543012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129387 (or 129385 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1153543012 is about 33963.8486040672. The cubic root of 1153543012 is about 1048.7643853800.

Adding to 1153543012 its reverse (2103453511), we get a palindrome (3256996523).

The spelling of 1153543012 in words is "one billion, one hundred fifty-three million, five hundred forty-three thousand, twelve".