2781846427 has 2 divisors, whose sum is σ = 2781846428. Its totient is φ = 2781846426.

The previous prime is 2781846383. The next prime is 2781846461. The reversal of 2781846427 is 7246481872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2781846427 - 2¹¹ = 2781844379 is a prime.

It is not a weakly prime, because it can be changed into another prime (2781846827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390923213 + 1390923214.

It is an arithmetic number, because the mean of its divisors is an integer number (1390923214).

Almost surely, 2^2781846427 is an apocalyptic number.

2781846427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781846427 is an equidigital number, since it uses as much as digits as its factorization.

2781846427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1204224, while the sum is 49.

The square root of 2781846427 is about 52743.2121414690. The cubic root of 2781846427 is about 1406.4071003497.

The spelling of 2781846427 in words is "two billion, seven hundred eighty-one million, eight hundred forty-six thousand, four hundred twenty-seven".