1928694621042 has 48 divisors (see below), whose sum is σ = 4775918484480. Its totient is φ = 551043694656.

The previous prime is 1928694621041. The next prime is 1928694621043. The reversal of 1928694621042 is 2401264968291.

1928694621042 is a `hidden beast` number, since 1 + 9 + 2 + 8 + 6 + 9 + 4 + 621 + 0 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1928694621041) and next prime (1928694621043).

It is a self number, because there is not a number n which added to its sum of digits gives 1928694621042.

It is not an unprimeable number, because it can be changed into a prime (1928694621041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6869103 + ... + 7144365.

It is an arithmetic number, because the mean of its divisors is an integer number (99498301760).

Almost surely, 2^{1928694621042} is an apocalyptic number.

1928694621042 is an abundant number, since it is smaller than the sum of its proper divisors (2847223863438).

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

1928694621042 is a wasteful number, since it uses less digits than its factorization.

1928694621042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330887 (or 330884 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 1928694621042 in words is "one trillion, nine hundred twenty-eight billion, six hundred ninety-four million, six hundred twenty-one thousand, forty-two".