161181430 has 8 divisors (see below), whose sum is σ = 290126592. Its totient is φ = 64472568.

The previous prime is 161181413. The next prime is 161181439. The reversal of 161181430 is 34181161.

It is a happy number.

161181430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161181395 and 161181404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161181439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8059062 + ... + 8059081.

It is an arithmetic number, because the mean of its divisors is an integer number (36265824).

Almost surely, 2^161181430 is an apocalyptic number.

161181430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161181430 is a deficient number, since it is larger than the sum of its proper divisors (128945162).

161181430 is a wasteful number, since it uses less digits than its factorization.

161181430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16118150.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 161181430 is about 12695.7248709950. The cubic root of 161181430 is about 544.2164539257.

The spelling of 161181430 in words is "one hundred sixty-one million, one hundred eighty-one thousand, four hundred thirty".