161668962 has 96 divisors (see below), whose sum is σ = 434004480. Its totient is φ = 42353280.

The previous prime is 161668961. The next prime is 161668973. The reversal of 161668962 is 269866161.

It is a super-2 number, since 2×161668962² = 52273706548314888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161668961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 374887 + ... + 375317.

It is an arithmetic number, because the mean of its divisors is an integer number (4520880).

Almost surely, 2^161668962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161668962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217002240).

161668962 is an abundant number, since it is smaller than the sum of its proper divisors (272335518).

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

161668962 is a wasteful number, since it uses less digits than its factorization.

161668962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 685 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 161668962 is about 12714.9110103060. The cubic root of 161668962 is about 544.7646061412.

The spelling of 161668962 in words is "one hundred sixty-one million, six hundred sixty-eight thousand, nine hundred sixty-two".