188369245439897 has 4 divisors (see below), whose sum is σ = 196559212632960. Its totient is φ = 180179278246836.

The previous prime is 188369245439891. The next prime is 188369245439923. The reversal of 188369245439897 is 798934542963881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 188369245439897 - 2⁶ = 188369245439833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188369245439891) 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 3 ways as a sum of consecutive naturals, for example, 4094983596497 + ... + 4094983596542.

It is an arithmetic number, because the mean of its divisors is an integer number (49139803158240).

Almost surely, 2^{188369245439897} is an apocalyptic number.

It is an amenable number.

188369245439897 is a deficient number, since it is larger than the sum of its proper divisors (8189967193063).

188369245439897 is an equidigital number, since it uses as much as digits as its factorization.

188369245439897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8189967193062.

The product of its digits is 22574039040, while the sum is 86.

The spelling of 188369245439897 in words is "one hundred eighty-eight trillion, three hundred sixty-nine billion, two hundred forty-five million, four hundred thirty-nine thousand, eight hundred ninety-seven".