1131444419 has 4 divisors (see below), whose sum is σ = 1293079344. Its totient is φ = 969809496.

The previous prime is 1131444407. The next prime is 1131444421. The reversal of 1131444419 is 9144441311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131444419 - 2²⁸ = 863008963 is a prime.

It is a super-2 number, since 2×1131444419² = 2560332946572495122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131444439) 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, 80817452 + ... + 80817465.

It is an arithmetic number, because the mean of its divisors is an integer number (323269836).

Almost surely, 2^1131444419 is an apocalyptic number.

1131444419 is a deficient number, since it is larger than the sum of its proper divisors (161634925).

1131444419 is an equidigital number, since it uses as much as digits as its factorization.

1131444419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161634924.

The product of its digits is 6912, while the sum is 32.

The square root of 1131444419 is about 33636.9502036079. The cubic root of 1131444419 is about 1042.0240473351.

The spelling of 1131444419 in words is "one billion, one hundred thirty-one million, four hundred forty-four thousand, four hundred nineteen".