1077137779 has 2 divisors, whose sum is σ = 1077137780. Its totient is φ = 1077137778.

The previous prime is 1077137777. The next prime is 1077137791. The reversal of 1077137779 is 9777317701.

It is a weak prime.

It is an emirp because it is prime and its reverse (9777317701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1077137779 - 2¹ = 1077137777 is a prime.

Together with 1077137777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1077137777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538568889 + 538568890.

It is an arithmetic number, because the mean of its divisors is an integer number (538568890).

Almost surely, 2^1077137779 is an apocalyptic number.

1077137779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1077137779 is an equidigital number, since it uses as much as digits as its factorization.

1077137779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453789, while the sum is 49.

The square root of 1077137779 is about 32819.7772539669. Note that the first 3 decimals coincide. The cubic root of 1077137779 is about 1025.0784089136.

The spelling of 1077137779 in words is "one billion, seventy-seven million, one hundred thirty-seven thousand, seven hundred seventy-nine".