161848973 has 32 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 126705600.

The previous prime is 161848969. The next prime is 161848979. The reversal of 161848973 is 379848161.

It is a cyclic number.

It is not a de Polignac number, because 161848973 - 2² = 161848969 is a prime.

It is a super-2 number, since 2×161848973² = 52390180122309458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161848979) 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, 192488 + ... + 193326.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^161848973 is an apocalyptic number.

161848973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

161848973 is a deficient number, since it is larger than the sum of its proper divisors (41363827).

161848973 is a wasteful number, since it uses less digits than its factorization.

161848973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953.

The product of its digits is 290304, while the sum is 47.

The square root of 161848973 is about 12721.9877770732. The cubic root of 161848973 is about 544.9667213078.

The spelling of 161848973 in words is "one hundred sixty-one million, eight hundred forty-eight thousand, nine hundred seventy-three".