1773164864 has 56 divisors (see below), whose sum is σ = 3717584640. Its totient is φ = 837756416.

The previous prime is 1773164857. The next prime is 1773164867. The reversal of 1773164864 is 4684613771.

It is a super-2 number, since 2×1773164864² = 6288227269848276992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1773164867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77069 + ... + 97395.

It is an arithmetic number, because the mean of its divisors is an integer number (66385440).

Almost surely, 2^1773164864 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 1773164864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858792320).

1773164864 is an abundant number, since it is smaller than the sum of its proper divisors (1944419776).

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

1773164864 is a wasteful number, since it uses less digits than its factorization.

1773164864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415 (or 20405 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 1773164864 is about 42108.9641762891. The cubic root of 1773164864 is about 1210.3650434236.

The spelling of 1773164864 in words is "one billion, seven hundred seventy-three million, one hundred sixty-four thousand, eight hundred sixty-four".