2078195645 has 8 divisors (see below), whose sum is σ = 2536103520. Its totient is φ = 1634377360.

The previous prime is 2078195621. The next prime is 2078195681. The reversal of 2078195645 is 5465918702.

It is a happy number.

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

It is not a de Polignac number, because 2078195645 - 2¹⁰ = 2078194621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2078195645.

It is a congruent number.

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, 3522071 + ... + 3522660.

It is an arithmetic number, because the mean of its divisors is an integer number (317012940).

Almost surely, 2^2078195645 is an apocalyptic number.

It is an amenable number.

2078195645 is a deficient number, since it is larger than the sum of its proper divisors (457907875).

2078195645 is an equidigital number, since it uses as much as digits as its factorization.

2078195645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044795.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 2078195645 is about 45587.2311618067. The cubic root of 2078195645 is about 1276.1316406951.

The spelling of 2078195645 in words is "two billion, seventy-eight million, one hundred ninety-five thousand, six hundred forty-five".