161432430 has 16 divisors (see below), whose sum is σ = 387437904. Its totient is φ = 43048640.

The previous prime is 161432389. The next prime is 161432431. The reversal of 161432430 is 34234161.

It is a self number, because there is not a number n which added to its sum of digits gives 161432430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161432431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2690511 + ... + 2690570.

It is an arithmetic number, because the mean of its divisors is an integer number (24214869).

Almost surely, 2^161432430 is an apocalyptic number.

161432430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161432430 is an abundant number, since it is smaller than the sum of its proper divisors (226005474).

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

161432430 is a wasteful number, since it uses less digits than its factorization.

161432430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381091.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 161432430 is about 12705.6062429150. The cubic root of 161432430 is about 544.4988013509.

Adding to 161432430 its reverse (34234161), we get a palindrome (195666591).

The spelling of 161432430 in words is "one hundred sixty-one million, four hundred thirty-two thousand, four hundred thirty".