1144422636 has 36 divisors (see below), whose sum is σ = 3106291608. Its totient is φ = 326977728.

The previous prime is 1144422619. The next prime is 1144422667. The reversal of 1144422636 is 6362244411.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1144422597 and 1144422606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972561 + ... + 973736.

It is an arithmetic number, because the mean of its divisors is an integer number (86285878).

Almost surely, 2^1144422636 is an apocalyptic number.

It is an amenable number.

1144422636 is an abundant number, since it is smaller than the sum of its proper divisors (1961868972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144422636 is a wasteful number, since it uses less digits than its factorization.

1144422636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946318 (or 1946309 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 1144422636 is about 33829.3162212895. The cubic root of 1144422636 is about 1045.9930841733.

The spelling of 1144422636 in words is "one billion, one hundred forty-four million, four hundred twenty-two thousand, six hundred thirty-six".