161960430 has 64 divisors (see below), whose sum is σ = 403200000. Its totient is φ = 41592960.

The previous prime is 161960417. The next prime is 161960431. The reversal of 161960430 is 34069161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161960431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324321 + ... + 324819.

It is an arithmetic number, because the mean of its divisors is an integer number (6300000).

Almost surely, 2^161960430 is an apocalyptic number.

161960430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161960430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201600000).

161960430 is an abundant number, since it is smaller than the sum of its proper divisors (241239570).

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

161960430 is a wasteful number, since it uses less digits than its factorization.

161960430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 161960430 is about 12726.3675100164. The cubic root of 161960430 is about 545.0917893823.

The spelling of 161960430 in words is "one hundred sixty-one million, nine hundred sixty thousand, four hundred thirty".