1889662166 has 48 divisors (see below), whose sum is σ = 3565653696. Its totient is φ = 745968384.

The previous prime is 1889662153. The next prime is 1889662193. The reversal of 1889662166 is 6612669881.

It is a super-2 number, since 2×1889662166² = 7141646203223623112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66236 + ... + 90368.

It is an arithmetic number, because the mean of its divisors is an integer number (74284452).

Almost surely, 2^1889662166 is an apocalyptic number.

1889662166 is a deficient number, since it is larger than the sum of its proper divisors (1675991530).

1889662166 is a wasteful number, since it uses less digits than its factorization.

1889662166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24213 (or 24206 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 1889662166 is about 43470.2446047868. The cubic root of 1889662166 is about 1236.3119183413.

The spelling of 1889662166 in words is "one billion, eight hundred eighty-nine million, six hundred sixty-two thousand, one hundred sixty-six".