1396118887 has 2 divisors, whose sum is σ = 1396118888. Its totient is φ = 1396118886.

The previous prime is 1396118873. The next prime is 1396118903. The reversal of 1396118887 is 7888116931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1396118887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396118807) 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, 698059443 + 698059444.

It is an arithmetic number, because the mean of its divisors is an integer number (698059444).

Almost surely, 2^1396118887 is an apocalyptic number.

1396118887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396118887 is an equidigital number, since it uses as much as digits as its factorization.

1396118887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 52.

The square root of 1396118887 is about 37364.6743194692. The cubic root of 1396118887 is about 1117.6542333922.

The spelling of 1396118887 in words is "one billion, three hundred ninety-six million, one hundred eighteen thousand, eight hundred eighty-seven".