161806485 has 8 divisors (see below), whose sum is σ = 258890400. Its totient is φ = 86296784.

The previous prime is 161806483. The next prime is 161806507. The reversal of 161806485 is 584608161.

161806485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161806485 - 2¹ = 161806483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161806483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5393535 + ... + 5393564.

It is an arithmetic number, because the mean of its divisors is an integer number (32361300).

Almost surely, 2^161806485 is an apocalyptic number.

161806485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161806485 is a deficient number, since it is larger than the sum of its proper divisors (97083915).

161806485 is a wasteful number, since it uses less digits than its factorization.

161806485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10787107.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 161806485 is about 12720.3178026337. The cubic root of 161806485 is about 544.9190295779.

The spelling of 161806485 in words is "one hundred sixty-one million, eight hundred six thousand, four hundred eighty-five".