18788460461 has 16 divisors (see below), whose sum is σ = 19283522688. Its totient is φ = 18300216000.

The previous prime is 18788460451. The next prime is 18788460589. The reversal of 18788460461 is 16406488781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18788460461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18788460451) 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, 6975431 + ... + 6978123.

It is an arithmetic number, because the mean of its divisors is an integer number (1205220168).

Almost surely, 2^18788460461 is an apocalyptic number.

It is an amenable number.

18788460461 is a deficient number, since it is larger than the sum of its proper divisors (495062227).

18788460461 is a wasteful number, since it uses less digits than its factorization.

18788460461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892.

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 18788460461 in words is "eighteen billion, seven hundred eighty-eight million, four hundred sixty thousand, four hundred sixty-one".