161964846 has 36 divisors (see below), whose sum is σ = 364431912. Its totient is φ = 53983908.

The previous prime is 161964841. The next prime is 161964851. The reversal of 161964846 is 648469161.

161964846 is a `hidden beast` number, since 161 + 9 + 6 + 484 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (161964841) and next prime (161964851).

It is a super-2 number, since 2×161964846² = 52465222679607432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161964841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6951 + ... + 19293.

Almost surely, 2^161964846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161964846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182215956).

161964846 is an abundant number, since it is smaller than the sum of its proper divisors (202467066).

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

161964846 is an frugal number, since it uses more digits than its factorization.

161964846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12369 (or 12348 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 161964846 is about 12726.5410068879. The cubic root of 161964846 is about 545.0967434802.

The spelling of 161964846 in words is "one hundred sixty-one million, nine hundred sixty-four thousand, eight hundred forty-six".