1378967587 has 2 divisors, whose sum is σ = 1378967588. Its totient is φ = 1378967586.

The previous prime is 1378967573. The next prime is 1378967627. The reversal of 1378967587 is 7857698731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378967587 - 2⁷ = 1378967459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1378967287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689483793 + 689483794.

It is an arithmetic number, because the mean of its divisors is an integer number (689483794).

Almost surely, 2^1378967587 is an apocalyptic number.

1378967587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378967587 is an equidigital number, since it uses as much as digits as its factorization.

1378967587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 61.

The square root of 1378967587 is about 37134.4528302222. The cubic root of 1378967587 is about 1113.0585738864.

The spelling of 1378967587 in words is "one billion, three hundred seventy-eight million, nine hundred sixty-seven thousand, five hundred eighty-seven".