1131654009 has 4 divisors (see below), whose sum is σ = 1508872016. Its totient is φ = 754436004.

The previous prime is 1131653989. The next prime is 1131654031. The reversal of 1131654009 is 9004561311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9004561311 = 3 ⋅3001520437.

It is not a de Polignac number, because 1131654009 - 2⁸ = 1131653753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131654059) 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, 188608999 + ... + 188609004.

It is an arithmetic number, because the mean of its divisors is an integer number (377218004).

Almost surely, 2^1131654009 is an apocalyptic number.

It is an amenable number.

1131654009 is a deficient number, since it is larger than the sum of its proper divisors (377218007).

1131654009 is an equidigital number, since it uses as much as digits as its factorization.

1131654009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377218006.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1131654009 is about 33640.0655320408. The cubic root of 1131654009 is about 1042.0883852535.

The spelling of 1131654009 in words is "one billion, one hundred thirty-one million, six hundred fifty-four thousand, nine".