1881352166 has 4 divisors (see below), whose sum is σ = 2822028252. Its totient is φ = 940676082.

The previous prime is 1881352157. The next prime is 1881352201. The reversal of 1881352166 is 6612531881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6612531881 = 419 ⋅15781699.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470338040 + ... + 470338043.

It is an arithmetic number, because the mean of its divisors is an integer number (705507063).

Almost surely, 2^1881352166 is an apocalyptic number.

1881352166 is a deficient number, since it is larger than the sum of its proper divisors (940676086).

1881352166 is an equidigital number, since it uses as much as digits as its factorization.

1881352166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940676085.

The product of its digits is 69120, while the sum is 41.

The square root of 1881352166 is about 43374.5566663223. The cubic root of 1881352166 is about 1234.4969821201.

The spelling of 1881352166 in words is "one billion, eight hundred eighty-one million, three hundred fifty-two thousand, one hundred sixty-six".