1768351668 has 24 divisors (see below), whose sum is σ = 4153850400. Its totient is φ = 585493920.

The previous prime is 1768351667. The next prime is 1768351727. The reversal of 1768351668 is 8661538671.

It is a self number, because there is not a number n which added to its sum of digits gives 1768351668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1768351661) 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, 492718 + ... + 496293.

It is an arithmetic number, because the mean of its divisors is an integer number (173077100).

Almost surely, 2^1768351668 is an apocalyptic number.

It is an amenable number.

1768351668 is an abundant number, since it is smaller than the sum of its proper divisors (2385498732).

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

1768351668 is a wasteful number, since it uses less digits than its factorization.

1768351668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989167 (or 989165 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 1768351668 is about 42051.7736605723. The cubic root of 1768351668 is about 1209.2688860177.

It can be divided in two parts, 176835 and 1668, that added together give a triangular number (178503 = T₅₉₇).

The spelling of 1768351668 in words is "one billion, seven hundred sixty-eight million, three hundred fifty-one thousand, six hundred sixty-eight".