2094978065 has 4 divisors (see below), whose sum is σ = 2513973684. Its totient is φ = 1675982448.

The previous prime is 2094978059. The next prime is 2094978071. The reversal of 2094978065 is 5608794902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2094978059) and next prime (2094978071).

It can be written as a sum of positive squares in 2 ways, for example, as 1487799184 + 607178881 = 38572^2 + 24641^2 .

It is a cyclic number.

It is not a de Polignac number, because 2094978065 - 2⁴ = 2094978049 is a prime.

It is a super-2 number, since 2×2094978065² = 8777866185662288450, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 209497802 + ... + 209497811.

It is an arithmetic number, because the mean of its divisors is an integer number (628493421).

Almost surely, 2^2094978065 is an apocalyptic number.

It is an amenable number.

2094978065 is a deficient number, since it is larger than the sum of its proper divisors (418995619).

2094978065 is an equidigital number, since it uses as much as digits as its factorization.

2094978065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418995618.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 2094978065 is about 45770.9303488579. The cubic root of 2094978065 is about 1279.5575588767.

The spelling of 2094978065 in words is "two billion, ninety-four million, nine hundred seventy-eight thousand, sixty-five".