164194614045 has 48 divisors (see below), whose sum is σ = 354830965632. Its totient is φ = 68236721280.

The previous prime is 164194614041. The next prime is 164194614091. The reversal of 164194614045 is 540416491461.

164194614045 is a `hidden beast` number, since 16 + 4 + 19 + 4 + 614 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 164194614045 - 2² = 164194614041 is a prime.

It is a super-2 number, since 2×164194614045² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164194614041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23689842 + ... + 23696771.

It is an arithmetic number, because the mean of its divisors is an integer number (7392311784).

Almost surely, 2^164194614045 is an apocalyptic number.

164194614045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164194614045 is an abundant number, since it is smaller than the sum of its proper divisors (190636351587).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164194614045 is a wasteful number, since it uses less digits than its factorization.

164194614045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47386642 (or 47386639 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 164194614045 in words is "one hundred sixty-four billion, one hundred ninety-four million, six hundred fourteen thousand, forty-five".