18685370350 has 12 divisors (see below), whose sum is σ = 34754788944. Its totient is φ = 7474148120.

The previous prime is 18685370339. The next prime is 18685370351. The reversal of 18685370350 is 5307358681.

It is a self number, because there is not a number n which added to its sum of digits gives 18685370350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18685370351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186853654 + ... + 186853753.

It is an arithmetic number, because the mean of its divisors is an integer number (2896232412).

Almost surely, 2^18685370350 is an apocalyptic number.

18685370350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18685370350 is a deficient number, since it is larger than the sum of its proper divisors (16069418594).

18685370350 is a wasteful number, since it uses less digits than its factorization.

18685370350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373707419 (or 373707414 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 18685370350 in words is "eighteen billion, six hundred eighty-five million, three hundred seventy thousand, three hundred fifty".