161973460 has 24 divisors (see below), whose sum is σ = 371066976. Its totient is φ = 58899360.

The previous prime is 161973451. The next prime is 161973473. The reversal of 161973460 is 64379161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367902 + ... + 368341.

It is an arithmetic number, because the mean of its divisors is an integer number (15461124).

Almost surely, 2^161973460 is an apocalyptic number.

161973460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161973460 is an abundant number, since it is smaller than the sum of its proper divisors (209093516).

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

161973460 is a wasteful number, since it uses less digits than its factorization.

161973460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736263 (or 736261 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 161973460 is about 12726.8794289881. The cubic root of 161973460 is about 545.1064068531.

The spelling of 161973460 in words is "one hundred sixty-one million, nine hundred seventy-three thousand, four hundred sixty".