161794464 has 48 divisors (see below), whose sum is σ = 457384032. Its totient is φ = 49782528.

The previous prime is 161794453. The next prime is 161794469. The reversal of 161794464 is 464497161.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (161794469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63574 + ... + 66069.

It is an arithmetic number, because the mean of its divisors is an integer number (9528834).

Almost surely, 2^161794464 is an apocalyptic number.

It is an amenable number.

161794464 is an abundant number, since it is smaller than the sum of its proper divisors (295589568).

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

161794464 is a wasteful number, since it uses less digits than its factorization.

161794464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129669 (or 129661 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 161794464 is about 12719.8452820779. The cubic root of 161794464 is about 544.9055347873.

The spelling of 161794464 in words is "one hundred sixty-one million, seven hundred ninety-four thousand, four hundred sixty-four".