161793604 has 24 divisors (see below), whose sum is σ = 324088128. Its totient is φ = 69232800.

The previous prime is 161793571. The next prime is 161793613. The reversal of 161793604 is 406397161.

It is an unprimeable number.

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, 15507 + ... + 23749.

It is an arithmetic number, because the mean of its divisors is an integer number (13503672).

Almost surely, 2^161793604 is an apocalyptic number.

161793604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161793604 is an abundant number, since it is smaller than the sum of its proper divisors (162294524).

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

161793604 is a wasteful number, since it uses less digits than its factorization.

161793604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8955 (or 8953 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 161793604 is about 12719.8114765904. The cubic root of 161793604 is about 544.9045693246.

The spelling of 161793604 in words is "one hundred sixty-one million, seven hundred ninety-three thousand, six hundred four".