161284790 has 16 divisors (see below), whose sum is σ = 290494512. Its totient is φ = 64473504.

The previous prime is 161284789. The next prime is 161284801. The reversal of 161284790 is 97482161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15812 + ... + 23928.

It is an arithmetic number, because the mean of its divisors is an integer number (18155907).

Almost surely, 2^161284790 is an apocalyptic number.

161284790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161284790 is a deficient number, since it is larger than the sum of its proper divisors (129209722).

161284790 is a wasteful number, since it uses less digits than its factorization.

161284790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 161284790 is about 12699.7948802333. The cubic root of 161284790 is about 544.3327580459.

The spelling of 161284790 in words is "one hundred sixty-one million, two hundred eighty-four thousand, seven hundred ninety".