1928169190918 has 4 divisors (see below), whose sum is σ = 2892253786380. Its totient is φ = 964084595458.

The previous prime is 1928169190907. The next prime is 1928169190957. The reversal of 1928169190918 is 8190919618291.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1928169190918.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482042297728 + ... + 482042297731.

It is an arithmetic number, because the mean of its divisors is an integer number (723063446595).

Almost surely, 2^{1928169190918} is an apocalyptic number.

1928169190918 is a deficient number, since it is larger than the sum of its proper divisors (964084595462).

1928169190918 is an equidigital number, since it uses as much as digits as its factorization.

1928169190918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964084595461.

The product of its (nonzero) digits is 5038848, while the sum is 64.

The spelling of 1928169190918 in words is "one trillion, nine hundred twenty-eight billion, one hundred sixty-nine million, one hundred ninety thousand, nine hundred eighteen".