2078637445 has 4 divisors (see below), whose sum is σ = 2494364940. Its totient is φ = 1662909952.

The previous prime is 2078637433. The next prime is 2078637497. The reversal of 2078637445 is 5447368702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5447368702 = 2 ⋅2723684351.

It can be written as a sum of positive squares in 2 ways, for example, as 370716516 + 1707920929 = 19254^2 + 41327^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078637445 - 2⁷ = 2078637317 is a prime.

It is a super-2 number, since 2×2078637445² = 8641467255512256050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2078637395 and 2078637404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207863740 + ... + 207863749.

It is an arithmetic number, because the mean of its divisors is an integer number (623591235).

Almost surely, 2^2078637445 is an apocalyptic number.

It is an amenable number.

2078637445 is a deficient number, since it is larger than the sum of its proper divisors (415727495).

2078637445 is an equidigital number, since it uses as much as digits as its factorization.

2078637445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415727494.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The square root of 2078637445 is about 45592.0765594198. The cubic root of 2078637445 is about 1276.2220644902. Note that the first 3 decimals are identical.

The spelling of 2078637445 in words is "two billion, seventy-eight million, six hundred thirty-seven thousand, four hundred forty-five".