18712497641 has 8 divisors (see below), whose sum is σ = 18739693440. Its totient is φ = 18685321072.

The previous prime is 18712497613. The next prime is 18712497673. The reversal of 18712497641 is 14679421781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18712497641 - 2¹⁴ = 18712481257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18712497641.

It is not an unprimeable number, because it can be changed into a prime (18712497241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4190576 + ... + 4195038.

It is an arithmetic number, because the mean of its divisors is an integer number (2342461680).

Almost surely, 2^18712497641 is an apocalyptic number.

It is an amenable number.

18712497641 is a deficient number, since it is larger than the sum of its proper divisors (27195799).

18712497641 is a wasteful number, since it uses less digits than its factorization.

18712497641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9615.

The product of its digits is 677376, while the sum is 50.

The spelling of 18712497641 in words is "eighteen billion, seven hundred twelve million, four hundred ninety-seven thousand, six hundred forty-one".