1378056077 has 2 divisors, whose sum is σ = 1378056078. Its totient is φ = 1378056076.

The previous prime is 1378056061. The next prime is 1378056079. The reversal of 1378056077 is 7706508731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1097861956 + 280194121 = 33134^2 + 16739^2 .

It is a cyclic number.

It is not a de Polignac number, because 1378056077 - 2⁴ = 1378056061 is a prime.

Together with 1378056079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378056079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689028038 + 689028039.

It is an arithmetic number, because the mean of its divisors is an integer number (689028039).

Almost surely, 2^1378056077 is an apocalyptic number.

It is an amenable number.

1378056077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378056077 is an equidigital number, since it uses as much as digits as its factorization.

1378056077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 1378056077 is about 37122.1776974358. The cubic root of 1378056077 is about 1112.8132725809.

The spelling of 1378056077 in words is "one billion, three hundred seventy-eight million, fifty-six thousand, seventy-seven".