1144894619 has 12 divisors (see below), whose sum is σ = 1289137080. Its totient is φ = 1015423200.

The previous prime is 1144894607. The next prime is 1144894649. The reversal of 1144894619 is 9164984411.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1144894619 is a prime.

It is a super-2 number, since 2×1144894619² = 2621567377230310322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1144894649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110429 + ... + 120350.

It is an arithmetic number, because the mean of its divisors is an integer number (107428090).

Almost surely, 2^1144894619 is an apocalyptic number.

1144894619 is a deficient number, since it is larger than the sum of its proper divisors (144242461).

1144894619 is a wasteful number, since it uses less digits than its factorization.

1144894619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230842 (or 230831 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 1144894619 is about 33836.2914486798. The cubic root of 1144894619 is about 1046.1368606315.

The spelling of 1144894619 in words is "one billion, one hundred forty-four million, eight hundred ninety-four thousand, six hundred nineteen".