1966278095 has 8 divisors (see below), whose sum is σ = 2369407680. Its totient is φ = 1566439840.

The previous prime is 1966278077. The next prime is 1966278101. The reversal of 1966278095 is 5908726691.

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

It is not a de Polignac number, because 1966278095 - 2⁶ = 1966278031 is a prime.

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, 821516 + ... + 823905.

It is an arithmetic number, because the mean of its divisors is an integer number (296175960).

Almost surely, 2^1966278095 is an apocalyptic number.

1966278095 is a deficient number, since it is larger than the sum of its proper divisors (403129585).

1966278095 is a wasteful number, since it uses less digits than its factorization.

1966278095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645665.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 1966278095 is about 44342.7344104984. The cubic root of 1966278095 is about 1252.7997181808.

The spelling of 1966278095 in words is "one billion, nine hundred sixty-six million, two hundred seventy-eight thousand, ninety-five".