1966788115 has 8 divisors (see below), whose sum is σ = 2360767968. Its totient is φ = 1573015680.

The previous prime is 1966788073. The next prime is 1966788139. The reversal of 1966788115 is 5118876691.

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

It is not a de Polignac number, because 1966788115 - 2¹³ = 1966779923 is a prime.

It is a Duffinian 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, 30166 + ... + 69595.

It is an arithmetic number, because the mean of its divisors is an integer number (295095996).

Almost surely, 2^1966788115 is an apocalyptic number.

1966788115 is a deficient number, since it is larger than the sum of its proper divisors (393979853).

1966788115 is an equidigital number, since it uses as much as digits as its factorization.

1966788115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103709.

The product of its digits is 725760, while the sum is 52.

The square root of 1966788115 is about 44348.4849233883. The cubic root of 1966788115 is about 1252.9080273220.

The spelling of 1966788115 in words is "one billion, nine hundred sixty-six million, seven hundred eighty-eight thousand, one hundred fifteen".