1866974928366 has 16 divisors (see below), whose sum is σ = 3733963938000. Its totient is φ = 622322629248.

The previous prime is 1866974928347. The next prime is 1866974928391. The reversal of 1866974928366 is 6638294796681.

It is a super-3 number, since 3×1866974928366³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2044800 + ... + 2813388.

It is an arithmetic number, because the mean of its divisors is an integer number (233372746125).

Almost surely, 2^{1866974928366} is an apocalyptic number.

1866974928366 is an abundant number, since it is smaller than the sum of its proper divisors (1866989009634).

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

1866974928366 is a wasteful number, since it uses less digits than its factorization.

1866974928366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173443.

The product of its digits is 1128701952, while the sum is 75.

The spelling of 1866974928366 in words is "one trillion, eight hundred sixty-six billion, nine hundred seventy-four million, nine hundred twenty-eight thousand, three hundred sixty-six".