161949284 has 12 divisors (see below), whose sum is σ = 323898624. Its totient is φ = 69406824.

The previous prime is 161949211. The next prime is 161949287. The reversal of 161949284 is 482949161.

161949284 is an admirable number.

It is a super-2 number, since 2×161949284² = 52455141176225312, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161949287) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2891924 + ... + 2891979.

It is an arithmetic number, because the mean of its divisors is an integer number (26991552).

Almost surely, 2^161949284 is an apocalyptic number.

161949284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161949284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161949284 is a wasteful number, since it uses less digits than its factorization.

161949284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783914 (or 5783912 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 161949284 is about 12725.9295927645. The cubic root of 161949284 is about 545.0792848209.

The spelling of 161949284 in words is "one hundred sixty-one million, nine hundred forty-nine thousand, two hundred eighty-four".