1318927 has 2 divisors, whose sum is σ = 1318928. Its totient is φ = 1318926.

The previous prime is 1318913. The next prime is 1318931. The reversal of 1318927 is 7298131.

It is a strong prime.

It is an emirp because it is prime and its reverse (7298131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1318927 is a prime.

1318927 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659463 + 659464.

It is an arithmetic number, because the mean of its divisors is an integer number (659464).

2^1318927 is an apocalyptic number.

1318927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318927 is an equidigital number, since it uses as much as digits as its factorization.

1318927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 1318927 is about 1148.4454710608. The cubic root of 1318927 is about 109.6663997719. Note that the first 3 decimals are identical.

It can be divided in two parts, 13 and 18927, that multiplied together give a triangular number (246051 = T₇₀₁).

The spelling of 1318927 in words is "one million, three hundred eighteen thousand, nine hundred twenty-seven".