1868773478 has 16 divisors (see below), whose sum is σ = 3293223696. Its totient is φ = 784100640.

The previous prime is 1868773477. The next prime is 1868773531. The reversal of 1868773478 is 8743778681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868773477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3266801 + ... + 3267372.

It is an arithmetic number, because the mean of its divisors is an integer number (205826481).

Almost surely, 2^1868773478 is an apocalyptic number.

1868773478 is a deficient number, since it is larger than the sum of its proper divisors (1424450218).

1868773478 is a wasteful number, since it uses less digits than its factorization.

1868773478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6534199.

The product of its digits is 12644352, while the sum is 59.

The square root of 1868773478 is about 43229.3127171830. The cubic root of 1868773478 is about 1231.7395524354.

The spelling of 1868773478 in words is "one billion, eight hundred sixty-eight million, seven hundred seventy-three thousand, four hundred seventy-eight".