189737956897 has 8 divisors (see below), whose sum is σ = 190062622656. Its totient is φ = 189413423472.

The previous prime is 189737956873. The next prime is 189737956937. The reversal of 189737956897 is 798659737981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189737956897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189737956297) 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, 3085788 + ... + 3146674.

It is an arithmetic number, because the mean of its divisors is an integer number (23757827832).

Almost surely, 2^189737956897 is an apocalyptic number.

It is an amenable number.

189737956897 is a deficient number, since it is larger than the sum of its proper divisors (324665759).

189737956897 is an equidigital number, since it uses as much as digits as its factorization.

189737956897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66167.

The product of its digits is 1440270720, while the sum is 79.

The spelling of 189737956897 in words is "one hundred eighty-nine billion, seven hundred thirty-seven million, nine hundred fifty-six thousand, eight hundred ninety-seven".