161302830 has 32 divisors (see below), whose sum is σ = 416906784. Its totient is φ = 39705216.

The previous prime is 161302819. The next prime is 161302831. The reversal of 161302830 is 38203161.

161302830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161302830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161302831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206409 + ... + 207188.

It is an arithmetic number, because the mean of its divisors is an integer number (13028337).

Almost surely, 2^161302830 is an apocalyptic number.

161302830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161302830 is an abundant number, since it is smaller than the sum of its proper divisors (255603954).

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

161302830 is a wasteful number, since it uses less digits than its factorization.

161302830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413620.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161302830 is about 12700.5051080656. The cubic root of 161302830 is about 544.3530521622.

Adding to 161302830 its reverse (38203161), we get a palindrome (199505991).

The spelling of 161302830 in words is "one hundred sixty-one million, three hundred two thousand, eight hundred thirty".