1153872609 has 4 divisors (see below), whose sum is σ = 1538496816. Its totient is φ = 769248404.

The previous prime is 1153872571. The next prime is 1153872623. The reversal of 1153872609 is 9062783511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1153872609 - 2⁷ = 1153872481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1153870609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192312099 + ... + 192312104.

It is an arithmetic number, because the mean of its divisors is an integer number (384624204).

Almost surely, 2^1153872609 is an apocalyptic number.

It is an amenable number.

1153872609 is a deficient number, since it is larger than the sum of its proper divisors (384624207).

1153872609 is an equidigital number, since it uses as much as digits as its factorization.

1153872609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384624206.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1153872609 is about 33968.7004314266. The cubic root of 1153872609 is about 1048.8642622159.

The spelling of 1153872609 in words is "one billion, one hundred fifty-three million, eight hundred seventy-two thousand, six hundred nine".