1868851718870 has 16 divisors (see below), whose sum is σ = 3363974160768. Its totient is φ = 747531561600.

The previous prime is 1868851718869. The next prime is 1868851718887. The reversal of 1868851718870 is 788171588681.

It is a self number, because there is not a number n which added to its sum of digits gives 1868851718870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247331 + ... + 1949070.

It is an arithmetic number, because the mean of its divisors is an integer number (210248385048).

Almost surely, 2^{1868851718870} is an apocalyptic number.

1868851718870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868851718870 is a deficient number, since it is larger than the sum of its proper divisors (1495122441898).

1868851718870 is a wasteful number, since it uses less digits than its factorization.

1868851718870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281495.

The product of its (nonzero) digits is 48168960, while the sum is 68.

The spelling of 1868851718870 in words is "one trillion, eight hundred sixty-eight billion, eight hundred fifty-one million, seven hundred eighteen thousand, eight hundred seventy".