2078432549 has 4 divisors (see below), whose sum is σ = 2078957580. Its totient is φ = 2077907520.

The previous prime is 2078432539. The next prime is 2078432579. The reversal of 2078432549 is 9452348702.

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

It can be written as a sum of positive squares in 2 ways, for example, as 374229025 + 1704203524 = 19345^2 + 41282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078432549 - 2⁴ = 2078432533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078432509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256532 + ... + 264509.

It is an arithmetic number, because the mean of its divisors is an integer number (519739395).

Almost surely, 2^2078432549 is an apocalyptic number.

It is an amenable number.

2078432549 is a deficient number, since it is larger than the sum of its proper divisors (525031).

2078432549 is an equidigital number, since it uses as much as digits as its factorization.

2078432549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525030.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 2078432549 is about 45589.8294469282. The cubic root of 2078432549 is about 1276.1801297460.

The spelling of 2078432549 in words is "two billion, seventy-eight million, four hundred thirty-two thousand, five hundred forty-nine".