18261419706 has 40 divisors (see below), whose sum is σ = 40934900160. Its totient is φ = 6084790632.

The previous prime is 18261419689. The next prime is 18261419777. The reversal of 18261419706 is 60791416281.

18261419706 is a `hidden beast` number, since 18 + 2 + 614 + 19 + 7 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 427885 + ... + 468623.

It is an arithmetic number, because the mean of its divisors is an integer number (1023372504).

Almost surely, 2^18261419706 is an apocalyptic number.

18261419706 is an abundant number, since it is smaller than the sum of its proper divisors (22673480454).

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

18261419706 is a wasteful number, since it uses less digits than its factorization.

18261419706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43520 (or 43511 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 18261419706 in words is "eighteen billion, two hundred sixty-one million, four hundred nineteen thousand, seven hundred six".