1768718490 has 128 divisors (see below), whose sum is σ = 5305540608. Its totient is φ = 366612480.

The previous prime is 1768718489. The next prime is 1768718503. The reversal of 1768718490 is 948178671.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1332207 + ... + 1333533.

It is an arithmetic number, because the mean of its divisors is an integer number (41449536).

Almost surely, 2^1768718490 is an apocalyptic number.

1768718490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1768718490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2652770304).

1768718490 is an abundant number, since it is smaller than the sum of its proper divisors (3536822118).

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

1768718490 is a wasteful number, since it uses less digits than its factorization.

1768718490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its (nonzero) digits is 677376, while the sum is 51.

The square root of 1768718490 is about 42056.1349864678. The cubic root of 1768718490 is about 1209.3524960391.

The spelling of 1768718490 in words is "one billion, seven hundred sixty-eight million, seven hundred eighteen thousand, four hundred ninety".