2878340449 has 8 divisors (see below), whose sum is σ = 2926408680. Its totient is φ = 2830300800.

The previous prime is 2878340447. The next prime is 2878340473. The reversal of 2878340449 is 9440438782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 152769600 + 2725570849 = 12360^2 + 52207^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2878340449 - 2¹ = 2878340447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2878340447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316437 + ... + 325405.

It is an arithmetic number, because the mean of its divisors is an integer number (365801085).

Almost surely, 2^2878340449 is an apocalyptic number.

It is an amenable number.

2878340449 is a deficient number, since it is larger than the sum of its proper divisors (48068231).

2878340449 is an equidigital number, since it uses as much as digits as its factorization.

2878340449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14291.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The square root of 2878340449 is about 53650.1672783972. The cubic root of 2878340449 is about 1422.4839893882.

The spelling of 2878340449 in words is "two billion, eight hundred seventy-eight million, three hundred forty thousand, four hundred forty-nine".