1153505389 has 8 divisors (see below), whose sum is σ = 1159710048. Its totient is φ = 1147314000.

The previous prime is 1153505387. The next prime is 1153505393. The reversal of 1153505389 is 9835053511.

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 1153505389 - 2¹ = 1153505387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153505387) 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, 204799 + ... + 210355.

It is an arithmetic number, because the mean of its divisors is an integer number (144963756).

Almost surely, 2^1153505389 is an apocalyptic number.

It is an amenable number.

1153505389 is a deficient number, since it is larger than the sum of its proper divisors (6204659).

1153505389 is an equidigital number, since it uses as much as digits as its factorization.

1153505389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635.

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 1153505389 is about 33963.2947312242. The cubic root of 1153505389 is about 1048.7529833803.

The spelling of 1153505389 in words is "one billion, one hundred fifty-three million, five hundred five thousand, three hundred eighty-nine".