1773644964 has 144 divisors (see below), whose sum is σ = 5207582016. Its totient is φ = 465696000.

The previous prime is 1773644933. The next prime is 1773644993. The reversal of 1773644964 is 4694463771.

It is a super-2 number, since 2×1773644964² = 6291632916645122592, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 2529814 + ... + 2530514.

It is an arithmetic number, because the mean of its divisors is an integer number (36163764).

Almost surely, 2^1773644964 is an apocalyptic number.

1773644964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1773644964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2603791008).

1773644964 is an abundant number, since it is smaller than the sum of its proper divisors (3433937052).

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

1773644964 is a wasteful number, since it uses less digits than its factorization.

1773644964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1057 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The square root of 1773644964 is about 42114.6644768779. The cubic root of 1773644964 is about 1210.4742725636.

The spelling of 1773644964 in words is "one billion, seven hundred seventy-three million, six hundred forty-four thousand, nine hundred sixty-four".