2781474427 has 2 divisors, whose sum is σ = 2781474428. Its totient is φ = 2781474426.

The previous prime is 2781474407. The next prime is 2781474457. The reversal of 2781474427 is 7244741872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2781474427 - 2²⁷ = 2647256699 is a prime.

It is not a weakly prime, because it can be changed into another prime (2781474407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390737213 + 1390737214.

It is an arithmetic number, because the mean of its divisors is an integer number (1390737214).

Almost surely, 2^2781474427 is an apocalyptic number.

2781474427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781474427 is an equidigital number, since it uses as much as digits as its factorization.

2781474427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 702464, while the sum is 46.

The square root of 2781474427 is about 52739.6855034233. The cubic root of 2781474427 is about 1406.3444073653.

The spelling of 2781474427 in words is "two billion, seven hundred eighty-one million, four hundred seventy-four thousand, four hundred twenty-seven".