164827199491 has 8 divisors (see below), whose sum is σ = 165913033104. Its totient is φ = 163743291360.

The previous prime is 164827199461. The next prime is 164827199543. The reversal of 164827199491 is 194991728461.

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 164827199491 - 2²¹ = 164825102339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164827199461) 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, 309400 + ... + 652213.

It is an arithmetic number, because the mean of its divisors is an integer number (20739129138).

Almost surely, 2^164827199491 is an apocalyptic number.

164827199491 is a deficient number, since it is larger than the sum of its proper divisors (1085833613).

164827199491 is an equidigital number, since it uses as much as digits as its factorization.

164827199491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962741.

The product of its digits is 7838208, while the sum is 61.

The spelling of 164827199491 in words is "one hundred sixty-four billion, eight hundred twenty-seven million, one hundred ninety-nine thousand, four hundred ninety-one".