161106983 has 4 divisors (see below), whose sum is σ = 161139288. Its totient is φ = 161074680.

The previous prime is 161106971. The next prime is 161107003. The reversal of 161106983 is 389601161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161106983 - 2¹⁸ = 160844839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161106923) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6908 + ... + 19233.

It is an arithmetic number, because the mean of its divisors is an integer number (40284822).

Almost surely, 2^161106983 is an apocalyptic number.

161106983 is a deficient number, since it is larger than the sum of its proper divisors (32305).

161106983 is an equidigital number, since it uses as much as digits as its factorization.

161106983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32304.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 161106983 is about 12692.7925611348. The cubic root of 161106983 is about 544.1326528706.

The spelling of 161106983 in words is "one hundred sixty-one million, one hundred six thousand, nine hundred eighty-three".