1928388115146 has 32 divisors (see below), whose sum is σ = 3886171499520. Its totient is φ = 637899831296.

The previous prime is 1928388115109. The next prime is 1928388115163. The reversal of 1928388115146 is 6415118838291.

It is a happy 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 in 15 ways as a sum of consecutive naturals, for example, 2204695 + ... + 2952533.

It is an arithmetic number, because the mean of its divisors is an integer number (121442859360).

Almost surely, 2^{1928388115146} is an apocalyptic number.

1928388115146 is an abundant number, since it is smaller than the sum of its proper divisors (1957783384374).

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

1928388115146 is a wasteful number, since it uses less digits than its factorization.

1928388115146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751118.

The product of its digits is 3317760, while the sum is 57.

The spelling of 1928388115146 in words is "one trillion, nine hundred twenty-eight billion, three hundred eighty-eight million, one hundred fifteen thousand, one hundred forty-six".