18997627363 has 8 divisors (see below), whose sum is σ = 22318891056. Its totient is φ = 15942064800.

The previous prime is 18997627361. The next prime is 18997627367. The reversal of 18997627363 is 36372679981.

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 18997627363 - 2¹ = 18997627361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18997627361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66425128 + ... + 66425413.

It is an arithmetic number, because the mean of its divisors is an integer number (2789861382).

Almost surely, 2^18997627363 is an apocalyptic number.

18997627363 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18997627363 is a deficient number, since it is larger than the sum of its proper divisors (3321263693).

18997627363 is a wasteful number, since it uses less digits than its factorization.

18997627363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132850565.

The product of its digits is 20575296, while the sum is 61.

The spelling of 18997627363 in words is "eighteen billion, nine hundred ninety-seven million, six hundred twenty-seven thousand, three hundred sixty-three".