188656349421 has 8 divisors (see below), whose sum is σ = 259656050944. Its totient is φ = 121713773760.

The previous prime is 188656349417. The next prime is 188656349437. The reversal of 188656349421 is 124943656881.

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

It is not a de Polignac number, because 188656349421 - 2² = 188656349417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188656349221) 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, 1014281356 + ... + 1014281541.

It is an arithmetic number, because the mean of its divisors is an integer number (32457006368).

Almost surely, 2^188656349421 is an apocalyptic number.

It is an amenable number.

188656349421 is a deficient number, since it is larger than the sum of its proper divisors (70999701523).

188656349421 is a wasteful number, since it uses less digits than its factorization.

188656349421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028562931.

The product of its digits is 9953280, while the sum is 57.

The spelling of 188656349421 in words is "one hundred eighty-eight billion, six hundred fifty-six million, three hundred forty-nine thousand, four hundred twenty-one".