18861740102 has 32 divisors (see below), whose sum is σ = 28929161664. Its totient is φ = 9221632000.

The previous prime is 18861740089. The next prime is 18861740137. The reversal of 18861740102 is 20104716881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7097558 + ... + 7100214.

It is an arithmetic number, because the mean of its divisors is an integer number (904036302).

Almost surely, 2^18861740102 is an apocalyptic number.

18861740102 is a deficient number, since it is larger than the sum of its proper divisors (10067421562).

18861740102 is a wasteful number, since it uses less digits than its factorization.

18861740102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184.

The product of its (nonzero) digits is 21504, while the sum is 38.

The spelling of 18861740102 in words is "eighteen billion, eight hundred sixty-one million, seven hundred forty thousand, one hundred two".