2781461409 has 8 divisors (see below), whose sum is σ = 3926769120. Its totient is φ = 1745230656.

The previous prime is 2781461401. The next prime is 2781461497. The reversal of 2781461409 is 9041641872.

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

It is not a de Polignac number, because 2781461409 - 2³ = 2781461401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2781461401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27269179 + ... + 27269280.

It is an arithmetic number, because the mean of its divisors is an integer number (490846140).

Almost surely, 2^2781461409 is an apocalyptic number.

It is an amenable number.

2781461409 is a deficient number, since it is larger than the sum of its proper divisors (1145307711).

2781461409 is a wasteful number, since it uses less digits than its factorization.

2781461409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54538479.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 2781461409 is about 52739.5620857815. The cubic root of 2781461409 is about 1406.3422133467.

The spelling of 2781461409 in words is "two billion, seven hundred eighty-one million, four hundred sixty-one thousand, four hundred nine".