164849494540 has 12 divisors (see below), whose sum is σ = 346183938576. Its totient is φ = 65939797808.

The previous prime is 164849494517. The next prime is 164849494549. The reversal of 164849494540 is 45494948461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (164849494549) 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 3 ways as a sum of consecutive naturals, for example, 4121237344 + ... + 4121237383.

It is an arithmetic number, because the mean of its divisors is an integer number (28848661548).

Almost surely, 2^164849494540 is an apocalyptic number.

164849494540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164849494540 is an abundant number, since it is smaller than the sum of its proper divisors (181334444036).

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

164849494540 is a wasteful number, since it uses less digits than its factorization.

164849494540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242474736 (or 8242474734 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 164849494540 in words is "one hundred sixty-four billion, eight hundred forty-nine million, four hundred ninety-four thousand, five hundred forty".