164195506945 has 8 divisors (see below), whose sum is σ = 199065893544. Its totient is φ = 130002215424.

The previous prime is 164195506919. The next prime is 164195506973. The reversal of 164195506945 is 549605591461.

It can be written as a sum of positive squares in 4 ways, for example, as 9444535489 + 154750971456 = 97183^2 + 393384^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 164195506945 - 2¹⁹ = 164194982657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169273234 + ... + 169274203.

It is an arithmetic number, because the mean of its divisors is an integer number (24883236693).

Almost surely, 2^164195506945 is an apocalyptic number.

It is an amenable number.

164195506945 is a deficient number, since it is larger than the sum of its proper divisors (34870386599).

164195506945 is an equidigital number, since it uses as much as digits as its factorization.

164195506945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338547539.

The product of its (nonzero) digits is 5832000, while the sum is 55.

The spelling of 164195506945 in words is "one hundred sixty-four billion, one hundred ninety-five million, five hundred six thousand, nine hundred forty-five".