161086836 has 12 divisors (see below), whose sum is σ = 375869312. Its totient is φ = 53695608.

The previous prime is 161086831. The next prime is 161086841. The reversal of 161086836 is 638680161.

It is an interprime number because it is at equal distance from previous prime (161086831) and next prime (161086841).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 161086794 and 161086803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161086831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6711940 + ... + 6711963.

Almost surely, 2^161086836 is an apocalyptic number.

It is an amenable number.

161086836 is an abundant number, since it is smaller than the sum of its proper divisors (214782476).

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

161086836 is a wasteful number, since it uses less digits than its factorization.

161086836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13423910 (or 13423908 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 161086836 is about 12691.9988969429. The cubic root of 161086836 is about 544.1099700186.

The spelling of 161086836 in words is "one hundred sixty-one million, eighty-six thousand, eight hundred thirty-six".