1728161382 has 16 divisors (see below), whose sum is σ = 3463425792. Its totient is φ = 574869960.

The previous prime is 1728161363. The next prime is 1728161399. The reversal of 1728161382 is 2831618271.

It is a super-2 number, since 2×1728161382² = 5973083524472299848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1728161382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292794 + ... + 298637.

It is an arithmetic number, because the mean of its divisors is an integer number (216464112).

Almost surely, 2^1728161382 is an apocalyptic number.

1728161382 is an abundant number, since it is smaller than the sum of its proper divisors (1735264410).

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

1728161382 is a wasteful number, since it uses less digits than its factorization.

1728161382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591923.

The product of its digits is 32256, while the sum is 39.

The square root of 1728161382 is about 41571.1604601074. The cubic root of 1728161382 is about 1200.0373557816.

The spelling of 1728161382 in words is "one billion, seven hundred twenty-eight million, one hundred sixty-one thousand, three hundred eighty-two".