161953792 has 192 divisors, whose sum is σ = 440294400. Its totient is φ = 57507840.

The previous prime is 161953789. The next prime is 161953811. The reversal of 161953792 is 297359161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2050009 + ... + 2050087.

It is an arithmetic number, because the mean of its divisors is an integer number (2293200).

Almost surely, 2^161953792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161953792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220147200).

161953792 is an abundant number, since it is smaller than the sum of its proper divisors (278340608).

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

161953792 is a wasteful number, since it uses less digits than its factorization.

161953792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 112 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The square root of 161953792 is about 12726.1067102237. The cubic root of 161953792 is about 545.0843423602.

The spelling of 161953792 in words is "one hundred sixty-one million, nine hundred fifty-three thousand, seven hundred ninety-two".