164191456019397 has 8 divisors (see below), whose sum is σ = 218927004833056. Its totient is φ = 109458438942672.

The previous prime is 164191456019387. The next prime is 164191456019407. The reversal of 164191456019397 is 793910654191461.

It is an interprime number because it is at equal distance from previous prime (164191456019387) and next prime (164191456019407).

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

It is not a de Polignac number, because 164191456019397 - 2⁶ = 164191456019333 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 (164191456019387) 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, 632782903 + ... + 633042324.

It is an arithmetic number, because the mean of its divisors is an integer number (27365875604132).

Almost surely, 2^{164191456019397} is an apocalyptic number.

It is an amenable number.

164191456019397 is a deficient number, since it is larger than the sum of its proper divisors (54735548813659).

164191456019397 is a wasteful number, since it uses less digits than its factorization.

164191456019397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265868467.

The product of its (nonzero) digits is 44089920, while the sum is 66.

The spelling of 164191456019397 in words is "one hundred sixty-four trillion, one hundred ninety-one billion, four hundred fifty-six million, nineteen thousand, three hundred ninety-seven".