161004492 has 36 divisors (see below), whose sum is σ = 443983176. Its totient is φ = 48789120.

The previous prime is 161004463. The next prime is 161004497. The reversal of 161004492 is 294400161.

161004492 is a `hidden beast` number, since 1 + 610 + 0 + 4 + 49 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (161004497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202893 + ... + 203684.

It is an arithmetic number, because the mean of its divisors is an integer number (12332866).

Almost surely, 2^161004492 is an apocalyptic number.

161004492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161004492 is an abundant number, since it is smaller than the sum of its proper divisors (282978684).

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

161004492 is a wasteful number, since it uses less digits than its factorization.

161004492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406598 (or 406593 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161004492 is about 12688.7545488121. The cubic root of 161004492 is about 544.0172419204.

The spelling of 161004492 in words is "one hundred sixty-one million, four thousand, four hundred ninety-two".