1872728378208 has 96 divisors (see below), whose sum is σ = 5543648853120. Its totient is φ = 614925717120.

The previous prime is 1872728378179. The next prime is 1872728378219. The reversal of 1872728378208 is 8028738272781.

1872728378208 is a `hidden beast` number, since 1 + 87 + 2 + 7 + 283 + 78 + 208 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1872728378208² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16117558 + ... + 16233333.

It is an arithmetic number, because the mean of its divisors is an integer number (57746342220).

Almost surely, 2^{1872728378208} is an apocalyptic number.

1872728378208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1872728378208 is an abundant number, since it is smaller than the sum of its proper divisors (3670920474912).

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

1872728378208 is a wasteful number, since it uses less digits than its factorization.

1872728378208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32350977 (or 32350963 counting only the distinct ones).

The product of its (nonzero) digits is 33718272, while the sum is 63.

The spelling of 1872728378208 in words is "one trillion, eight hundred seventy-two billion, seven hundred twenty-eight million, three hundred seventy-eight thousand, two hundred eight".