1144609219 has 4 divisors (see below), whose sum is σ = 1232656096. Its totient is φ = 1056562344.

The previous prime is 1144609211. The next prime is 1144609223. The reversal of 1144609219 is 9129064411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9129064411 = 47 ⋅194235413.

It is a cyclic number.

It is not a de Polignac number, because 1144609219 - 2³ = 1144609211 is a prime.

It is a super-2 number, since 2×1144609219² = 2620260528439579922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144609211) 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, 44023419 + ... + 44023444.

It is an arithmetic number, because the mean of its divisors is an integer number (308164024).

Almost surely, 2^1144609219 is an apocalyptic number.

1144609219 is a deficient number, since it is larger than the sum of its proper divisors (88046877).

1144609219 is an equidigital number, since it uses as much as digits as its factorization.

1144609219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88046876.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1144609219 is about 33832.0738205626. The cubic root of 1144609219 is about 1046.0499262047.

The spelling of 1144609219 in words is "one billion, one hundred forty-four million, six hundred nine thousand, two hundred nineteen".