18214909660 has 48 divisors (see below), whose sum is σ = 38507781312. Its totient is φ = 7237209600.

The previous prime is 18214909621. The next prime is 18214909663. The reversal of 18214909660 is 6690941281.

It is a happy number.

It is a super-2 number, since 2×18214909660² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18214909660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214909663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3737025 + ... + 3741895.

It is an arithmetic number, because the mean of its divisors is an integer number (802245444).

Almost surely, 2^18214909660 is an apocalyptic number.

18214909660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18214909660 is an abundant number, since it is smaller than the sum of its proper divisors (20292871652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18214909660 is a wasteful number, since it uses less digits than its factorization.

18214909660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6094 (or 6092 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 18214909660 in words is "eighteen billion, two hundred fourteen million, nine hundred nine thousand, six hundred sixty".