188122693961649 has 8 divisors (see below), whose sum is σ = 250832393502400. Its totient is φ = 125414061864336.

The previous prime is 188122693961623. The next prime is 188122693961677. The reversal of 188122693961649 is 946169396221881.

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

It is not a de Polignac number, because 188122693961649 - 2²⁰ = 188122692913073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188122693961749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266449549 + ... + 267154650.

It is an arithmetic number, because the mean of its divisors is an integer number (31354049187800).

Almost surely, 2^{188122693961649} is an apocalyptic number.

It is an amenable number.

188122693961649 is a deficient number, since it is larger than the sum of its proper divisors (62709699540751).

188122693961649 is a wasteful number, since it uses less digits than its factorization.

188122693961649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533721719.

The product of its digits is 483729408, while the sum is 75.

The spelling of 188122693961649 in words is "one hundred eighty-eight trillion, one hundred twenty-two billion, six hundred ninety-three million, nine hundred sixty-one thousand, six hundred forty-nine".