1786728172968 has 48 divisors (see below), whose sum is σ = 4951591650720. Its totient is φ = 581725450656.

The previous prime is 1786728172951. The next prime is 1786728172973. The reversal of 1786728172968 is 8692718276871.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 1786728172896 and 1786728172905.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288551196 + ... + 288557387.

It is an arithmetic number, because the mean of its divisors is an integer number (103158159390).

Almost surely, 2^{1786728172968} is an apocalyptic number.

1786728172968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1786728172968 is an abundant number, since it is smaller than the sum of its proper divisors (3164863477752).

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

1786728172968 is a wasteful number, since it uses less digits than its factorization.

1786728172968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577108638 (or 577108631 counting only the distinct ones).

The product of its digits is 227598336, while the sum is 72.

The spelling of 1786728172968 in words is "one trillion, seven hundred eighty-six billion, seven hundred twenty-eight million, one hundred seventy-two thousand, nine hundred sixty-eight".