1966785105 has 8 divisors (see below), whose sum is σ = 3146856192. Its totient is φ = 1048952048.

The previous prime is 1966785089. The next prime is 1966785113. The reversal of 1966785105 is 5015876691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1966785105 - 2⁴ = 1966785089 is a prime.

It is a super-2 number, since 2×1966785105² = 7736487298499722050, which contains 22 as substring.

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, 65559489 + ... + 65559518.

It is an arithmetic number, because the mean of its divisors is an integer number (393357024).

Almost surely, 2^1966785105 is an apocalyptic number.

1966785105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1966785105 is a deficient number, since it is larger than the sum of its proper divisors (1180071087).

1966785105 is a wasteful number, since it uses less digits than its factorization.

1966785105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131119015.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 1966785105 is about 44348.4509876050. The cubic root of 1966785105 is about 1252.9073881657.

The spelling of 1966785105 in words is "one billion, nine hundred sixty-six million, seven hundred eighty-five thousand, one hundred five".