1153213543 has 8 divisors (see below), whose sum is σ = 1159282800. Its totient is φ = 1147153728.

The previous prime is 1153213541. The next prime is 1153213559. The reversal of 1153213543 is 3453123511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1153213543 - 2¹ = 1153213541 is a prime.

It is a super-2 number, since 2×1153213543² = 2659802951517225698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153213541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491868 + ... + 494206.

It is an arithmetic number, because the mean of its divisors is an integer number (144910350).

Almost surely, 2^1153213543 is an apocalyptic number.

1153213543 is a deficient number, since it is larger than the sum of its proper divisors (6069257).

1153213543 is a wasteful number, since it uses less digits than its factorization.

1153213543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721.

The product of its digits is 5400, while the sum is 28.

The square root of 1153213543 is about 33958.9979681380. The cubic root of 1153213543 is about 1048.6645283160.

The spelling of 1153213543 in words is "one billion, one hundred fifty-three million, two hundred thirteen thousand, five hundred forty-three".