2780347541 has 2 divisors, whose sum is σ = 2780347542. Its totient is φ = 2780347540.

The previous prime is 2780347523. The next prime is 2780347553. The reversal of 2780347541 is 1457430872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2780347441 + 100 = 52729^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 2780347541 - 2⁶ = 2780347477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2780347741) 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 as a sum of consecutive naturals, namely, 1390173770 + 1390173771.

It is an arithmetic number, because the mean of its divisors is an integer number (1390173771).

Almost surely, 2^2780347541 is an apocalyptic number.

It is an amenable number.

2780347541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780347541 is an equidigital number, since it uses as much as digits as its factorization.

2780347541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 2780347541 is about 52729.0009482448. Note that the first 3 decimals coincide. The cubic root of 2780347541 is about 1406.1544596794.

The spelling of 2780347541 in words is "two billion, seven hundred eighty million, three hundred forty-seven thousand, five hundred forty-one".