1868988071 has 2 divisors, whose sum is σ = 1868988072. Its totient is φ = 1868988070.

The previous prime is 1868988061. The next prime is 1868988097. The reversal of 1868988071 is 1708898681.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868988071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1868987998 and 1868988016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868988031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934494035 + 934494036.

It is an arithmetic number, because the mean of its divisors is an integer number (934494036).

Almost surely, 2^1868988071 is an apocalyptic number.

1868988071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868988071 is an equidigital number, since it uses as much as digits as its factorization.

1868988071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 56.

The square root of 1868988071 is about 43231.7946770661. The cubic root of 1868988071 is about 1231.7866978978.

The spelling of 1868988071 in words is "one billion, eight hundred sixty-eight million, nine hundred eighty-eight thousand, seventy-one".