1986977066 has 16 divisors (see below), whose sum is σ = 3005535456. Its totient is φ = 985165776.

The previous prime is 1986977063. The next prime is 1986977077. The reversal of 1986977066 is 6607796891.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1986976996 and 1986977014.

It is not an unprimeable number, because it can be changed into a prime (1986977063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112745 + ... + 129171.

It is an arithmetic number, because the mean of its divisors is an integer number (187845966).

Almost surely, 2^1986977066 is an apocalyptic number.

1986977066 is a deficient number, since it is larger than the sum of its proper divisors (1018558390).

1986977066 is a wasteful number, since it uses less digits than its factorization.

1986977066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16933.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 1986977066 is about 44575.5209279712. The cubic root of 1986977066 is about 1257.1804480335.

The spelling of 1986977066 in words is "one billion, nine hundred eighty-six million, nine hundred seventy-seven thousand, sixty-six".