1367027861 has 2 divisors, whose sum is σ = 1367027862. Its totient is φ = 1367027860.

The previous prime is 1367027777. The next prime is 1367027881. The reversal of 1367027861 is 1687207631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 718561636 + 648466225 = 26806^2 + 25465^2 .

It is an emirp because it is prime and its reverse (1687207631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1367027861 - 2²² = 1362833557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1367027881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683513930 + 683513931.

It is an arithmetic number, because the mean of its divisors is an integer number (683513931).

Almost surely, 2^1367027861 is an apocalyptic number.

It is an amenable number.

1367027861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1367027861 is an equidigital number, since it uses as much as digits as its factorization.

1367027861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1367027861 is about 36973.3398680725. The cubic root of 1367027861 is about 1109.8368022928.

The spelling of 1367027861 in words is "one billion, three hundred sixty-seven million, twenty-seven thousand, eight hundred sixty-one".