1986465166 has 16 divisors (see below), whose sum is σ = 3432185856. Its totient is φ = 844637976.

The previous prime is 1986465157. The next prime is 1986465233. The reversal of 1986465166 is 6615646891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556846 + ... + 560401.

It is an arithmetic number, because the mean of its divisors is an integer number (214511616).

Almost surely, 2^1986465166 is an apocalyptic number.

1986465166 is a deficient number, since it is larger than the sum of its proper divisors (1445720690).

1986465166 is a wasteful number, since it uses less digits than its factorization.

1986465166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117383.

The product of its digits is 1866240, while the sum is 52.

The square root of 1986465166 is about 44569.7786173546. The cubic root of 1986465166 is about 1257.0724773284.

The spelling of 1986465166 in words is "one billion, nine hundred eighty-six million, four hundred sixty-five thousand, one hundred sixty-six".