1423363644 has 96 divisors (see below), whose sum is σ = 3925017600. Its totient is φ = 444787200.

The previous prime is 1423363637. The next prime is 1423363657. The reversal of 1423363644 is 4463633241.

1423363644 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 3 + 6 + 3 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 = 1423363599 and 1423363608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195469 + ... + 202619.

It is an arithmetic number, because the mean of its divisors is an integer number (40885600).

Almost surely, 2^1423363644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423363644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1962508800).

1423363644 is an abundant number, since it is smaller than the sum of its proper divisors (2501653956).

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

1423363644 is a wasteful number, since it uses less digits than its factorization.

1423363644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280 (or 7272 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

The square root of 1423363644 is about 37727.4918858914. The cubic root of 1423363644 is about 1124.8776542507.

Adding to 1423363644 its reverse (4463633241), we get a palindrome (5886996885).

It can be divided in two parts, 14233 and 63644, that added together give a palindrome (77877).

The spelling of 1423363644 in words is "one billion, four hundred twenty-three million, three hundred sixty-three thousand, six hundred forty-four".